diff --git a/composer.json b/composer.json
index 6fe00d85..fa5319ba 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,6 @@
             "generated/curl.php",
             "generated/datetime.php",
             "generated/dir.php",
-            "generated/dom.php",
             "generated/eio.php",
             "generated/errorfunc.php",
             "generated/exec.php",
@@ -62,7 +61,6 @@
             "generated/opcache.php",
             "generated/openssl.php",
             "generated/outcontrol.php",
-            "generated/password.php",
             "generated/pcntl.php",
             "generated/pcre.php",
             "generated/pgsql.php",
diff --git a/generated/Exceptions/DomException.php b/generated/Exceptions/DomException.php
deleted file mode 100644
index 401173cb..00000000
--- a/generated/Exceptions/DomException.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-namespace Safe\Exceptions;
-
-class DomException extends \ErrorException implements SafeExceptionInterface
-{
-    public static function createFromPhpError(): self
-    {
-        $error = error_get_last();
-        return new self($error['message'] ?? 'An error occured', 0, $error['type'] ?? 1);
-    }
-}
diff --git a/generated/Exceptions/PasswordException.php b/generated/Exceptions/PasswordException.php
deleted file mode 100644
index f0edba12..00000000
--- a/generated/Exceptions/PasswordException.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-namespace Safe\Exceptions;
-
-class PasswordException extends \ErrorException implements SafeExceptionInterface
-{
-    public static function createFromPhpError(): self
-    {
-        $error = error_get_last();
-        return new self($error['message'] ?? 'An error occured', 0, $error['type'] ?? 1);
-    }
-}
diff --git a/generated/calendar.php b/generated/calendar.php
index f5ad7b20..a5b03905 100644
--- a/generated/calendar.php
+++ b/generated/calendar.php
@@ -4,28 +4,6 @@
 
 use Safe\Exceptions\CalendarException;
 
-/**
- * This function will return a Unix timestamp corresponding to the
- * Julian Day given in julian_day. The time returned is
- * UTC.
- *
- * @param int $julian_day A julian day number between 2440588 and 106751993607888
- * on 64bit systems, or between 2440588 and 2465443 on 32bit systems.
- * @return int The unix timestamp for the start (midnight, not noon) of the given Julian day
- * @throws CalendarException
- *
- */
-function jdtounix(int $julian_day): int
-{
-    error_clear_last();
-    $result = \jdtounix($julian_day);
-    if ($result === false) {
-        throw CalendarException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Return the Julian Day for a Unix timestamp
  * (seconds since 1.1.1970), or for the current day if no
diff --git a/generated/curl.php b/generated/curl.php
index 5029074e..97b0cd49 100644
--- a/generated/curl.php
+++ b/generated/curl.php
@@ -577,26 +577,6 @@ function curl_init(string $url = null)
 }
 
 
-/**
- * Return an integer containing the last multi curl error number.
- *
- * @param resource $multi_handle A cURL multi handle returned by
- * curl_multi_init.
- * @return int Return an integer containing the last multi curl error number.
- * @throws CurlException
- *
- */
-function curl_multi_errno($multi_handle): int
-{
-    error_clear_last();
-    $result = \curl_multi_errno($multi_handle);
-    if ($result === false) {
-        throw CurlException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Ask the multi handle if there are any messages or information from the individual transfers.
  * Messages may include information such as an error code from the transfer or just the fact
diff --git a/generated/datetime.php b/generated/datetime.php
index 8dc81328..79e000eb 100644
--- a/generated/datetime.php
+++ b/generated/datetime.php
@@ -664,6 +664,329 @@ function mktime(int $hour, int $minute = null, int $second = null, int $month =
 }
 
 
+/**
+ * Format the time and/or date according to locale settings. Month and weekday
+ * names and other language-dependent strings respect the current locale set
+ * with setlocale.
+ *
+ * Not all conversion specifiers may be supported by your C library, in which
+ * case they will not be supported by PHP's strftime.
+ * Additionally, not all platforms support negative timestamps, so your
+ * date range may be limited to no earlier than the Unix epoch. This means that
+ * %e, %T, %R and, %D (and possibly others) - as well as dates prior to
+ * Jan 1, 1970 - will not work on Windows, some Linux
+ * distributions, and a few other operating systems. For Windows systems, a
+ * complete overview of supported conversion specifiers can be found at
+ * MSDN.
+ *
+ * @param string $format
+ * The following characters are recognized in the
+ * format parameter string
+ *
+ *
+ *
+ * format
+ * Description
+ * Example returned values
+ *
+ *
+ *
+ *
+ * Day
+ * ---
+ * ---
+ *
+ *
+ * %a
+ * An abbreviated textual representation of the day
+ * Sun through Sat
+ *
+ *
+ * %A
+ * A full textual representation of the day
+ * Sunday through Saturday
+ *
+ *
+ * %d
+ * Two-digit day of the month (with leading zeros)
+ * 01 to 31
+ *
+ *
+ * %e
+ *
+ * Day of the month, with a space preceding single digits. Not
+ * implemented as described on Windows. See below for more information.
+ *
+ * 1 to 31
+ *
+ *
+ * %j
+ * Day of the year, 3 digits with leading zeros
+ * 001 to 366
+ *
+ *
+ * %u
+ * ISO-8601 numeric representation of the day of the week
+ * 1 (for Monday) through 7 (for Sunday)
+ *
+ *
+ * %w
+ * Numeric representation of the day of the week
+ * 0 (for Sunday) through 6 (for Saturday)
+ *
+ *
+ * Week
+ * ---
+ * ---
+ *
+ *
+ * %U
+ * Week number of the given year, starting with the first
+ * Sunday as the first week
+ * 13 (for the 13th full week of the year)
+ *
+ *
+ * %V
+ * ISO-8601:1988 week number of the given year, starting with
+ * the first week of the year with at least 4 weekdays, with Monday
+ * being the start of the week
+ * 01 through 53 (where 53
+ * accounts for an overlapping week)
+ *
+ *
+ * %W
+ * A numeric representation of the week of the year, starting
+ * with the first Monday as the first week
+ * 46 (for the 46th week of the year beginning
+ * with a Monday)
+ *
+ *
+ * Month
+ * ---
+ * ---
+ *
+ *
+ * %b
+ * Abbreviated month name, based on the locale
+ * Jan through Dec
+ *
+ *
+ * %B
+ * Full month name, based on the locale
+ * January through December
+ *
+ *
+ * %h
+ * Abbreviated month name, based on the locale (an alias of %b)
+ * Jan through Dec
+ *
+ *
+ * %m
+ * Two digit representation of the month
+ * 01 (for January) through 12 (for December)
+ *
+ *
+ * Year
+ * ---
+ * ---
+ *
+ *
+ * %C
+ * Two digit representation of the century (year divided by 100, truncated to an integer)
+ * 19 for the 20th Century
+ *
+ *
+ * %g
+ * Two digit representation of the year going by ISO-8601:1988 standards (see %V)
+ * Example: 09 for the week of January 6, 2009
+ *
+ *
+ * %G
+ * The full four-digit version of %g
+ * Example: 2008 for the week of January 3, 2009
+ *
+ *
+ * %y
+ * Two digit representation of the year
+ * Example: 09 for 2009, 79 for 1979
+ *
+ *
+ * %Y
+ * Four digit representation for the year
+ * Example: 2038
+ *
+ *
+ * Time
+ * ---
+ * ---
+ *
+ *
+ * %H
+ * Two digit representation of the hour in 24-hour format
+ * 00 through 23
+ *
+ *
+ * %k
+ * Hour in 24-hour format, with a space preceding single digits
+ * 0 through 23
+ *
+ *
+ * %I
+ * Two digit representation of the hour in 12-hour format
+ * 01 through 12
+ *
+ *
+ * %l (lower-case 'L')
+ * Hour in 12-hour format, with a space preceding single digits
+ * 1 through 12
+ *
+ *
+ * %M
+ * Two digit representation of the minute
+ * 00 through 59
+ *
+ *
+ * %p
+ * UPPER-CASE 'AM' or 'PM' based on the given time
+ * Example: AM for 00:31, PM for 22:23
+ *
+ *
+ * %P
+ * lower-case 'am' or 'pm' based on the given time
+ * Example: am for 00:31, pm for 22:23
+ *
+ *
+ * %r
+ * Same as "%I:%M:%S %p"
+ * Example: 09:34:17 PM for 21:34:17
+ *
+ *
+ * %R
+ * Same as "%H:%M"
+ * Example: 00:35 for 12:35 AM, 16:44 for 4:44 PM
+ *
+ *
+ * %S
+ * Two digit representation of the second
+ * 00 through 59
+ *
+ *
+ * %T
+ * Same as "%H:%M:%S"
+ * Example: 21:34:17 for 09:34:17 PM
+ *
+ *
+ * %X
+ * Preferred time representation based on locale, without the date
+ * Example: 03:59:16 or 15:59:16
+ *
+ *
+ * %z
+ * The time zone offset. Not implemented as described on
+ * Windows. See below for more information.
+ * Example: -0500 for US Eastern Time
+ *
+ *
+ * %Z
+ * The time zone abbreviation. Not implemented as described on
+ * Windows. See below for more information.
+ * Example: EST for Eastern Time
+ *
+ *
+ * Time and Date Stamps
+ * ---
+ * ---
+ *
+ *
+ * %c
+ * Preferred date and time stamp based on locale
+ * Example: Tue Feb  5 00:45:10 2009 for
+ * February 5, 2009 at 12:45:10 AM
+ *
+ *
+ * %D
+ * Same as "%m/%d/%y"
+ * Example: 02/05/09 for February 5, 2009
+ *
+ *
+ * %F
+ * Same as "%Y-%m-%d" (commonly used in database datestamps)
+ * Example: 2009-02-05 for February 5, 2009
+ *
+ *
+ * %s
+ * Unix Epoch Time timestamp (same as the time
+ * function)
+ * Example: 305815200 for September 10, 1979 08:40:00 AM
+ *
+ *
+ * %x
+ * Preferred date representation based on locale, without the time
+ * Example: 02/05/09 for February 5, 2009
+ *
+ *
+ * Miscellaneous
+ * ---
+ * ---
+ *
+ *
+ * %n
+ * A newline character ("\n")
+ * ---
+ *
+ *
+ * %t
+ * A Tab character ("\t")
+ * ---
+ *
+ *
+ * %%
+ * A literal percentage character ("%")
+ * ---
+ *
+ *
+ *
+ *
+ *
+ * Windows only:
+ *
+ * The %e modifier is not supported in the Windows
+ * implementation of this function. To achieve this value, the
+ * %#d modifier can be used instead. The example below
+ * illustrates how to write a cross platform compatible function.
+ *
+ * The %z and %Z modifiers both
+ * return the time zone name instead of the offset or abbreviation.
+ * @param int $timestamp The optional timestamp parameter is an
+ * int Unix timestamp that defaults to the current
+ * local time if timestamp is omitted or NULL. In other
+ * words, it defaults to the value of time.
+ * @return string Returns a string formatted according format
+ * using the given timestamp or the current
+ * local time if no timestamp is given.  Month and weekday names and
+ * other language-dependent strings respect the current locale set
+ * with setlocale.
+ * The function returns FALSE if format is empty, contains unsupported
+ * conversion specifiers, or if the length of the returned string would be greater than
+ * 4095.
+ * @throws DatetimeException
+ *
+ */
+function strftime(string $format, int $timestamp = null): string
+{
+    error_clear_last();
+    if ($timestamp !== null) {
+        $result = \strftime($format, $timestamp);
+    } else {
+        $result = \strftime($format);
+    }
+    if ($result === false) {
+        throw DatetimeException::createFromPhpError();
+    }
+    return $result;
+}
+
+
 /**
  * strptime returns an array with the
  * timestamp parsed.
diff --git a/generated/dom.php b/generated/dom.php
deleted file mode 100644
index 316d2ce2..00000000
--- a/generated/dom.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-namespace Safe;
-
-use Safe\Exceptions\DomException;
-
-/**
- * This function takes the node node of class
- * SimpleXML and makes it into a
- * DOMElement node. This new object can then be used
- * as a native DOMElement node.
- *
- * @param \SimpleXMLElement $node The SimpleXMLElement node.
- * @return \DOMElement|false The DOMElement node added.
- * @throws DomException
- *
- */
-function dom_import_simplexml(\SimpleXMLElement $node): \DOMElement
-{
-    error_clear_last();
-    $result = \dom_import_simplexml($node);
-    if ($result === null) {
-        throw DomException::createFromPhpError();
-    }
-    return $result;
-}
diff --git a/generated/functionsList.php b/generated/functionsList.php
index 3747e19b..740e8104 100644
--- a/generated/functionsList.php
+++ b/generated/functionsList.php
@@ -43,7 +43,6 @@
     'com_print_typeinfo',
     'convert_uudecode',
     'copy',
-    'count_chars',
     'create_function',
     'cubrid_bind',
     'cubrid_column_names',
@@ -104,7 +103,6 @@
     'curl_exec',
     'curl_getinfo',
     'curl_init',
-    'curl_multi_errno',
     'curl_multi_info_read',
     'curl_multi_init',
     'curl_multi_setopt',
@@ -138,7 +136,6 @@
     'disk_total_space',
     'dl',
     'dns_get_record',
-    'dom_import_simplexml',
     'eio_busy',
     'eio_chmod',
     'eio_chown',
@@ -250,9 +247,6 @@
     'get_meta_tags',
     'glob',
     'gmmktime',
-    'gmp_binomial',
-    'gmp_export',
-    'gmp_import',
     'gmp_random_seed',
     'gmstrftime',
     'gnupg_adddecryptkey',
@@ -272,6 +266,7 @@
     'gzgets',
     'gzgetss',
     'gzinflate',
+    'gzopen',
     'gzpassthru',
     'gzread',
     'gzrewind',
@@ -455,7 +450,6 @@
     'inotify_rm_watch',
     'iptcembed',
     'iptcparse',
-    'jdtounix',
     'jpeg2wbmp',
     'json_decode',
     'json_encode',
@@ -524,9 +518,7 @@
     'mb_regex_encoding',
     'mb_send_mail',
     'mb_split',
-    'mb_str_split',
     'md5_file',
-    'metaphone',
     'mime_content_type',
     'mkdir',
     'mktime',
@@ -700,7 +692,6 @@
     'parse_ini_file',
     'parse_ini_string',
     'parse_url',
-    'password_hash',
     'pcntl_getpriority',
     'pcntl_setpriority',
     'pcntl_signal',
@@ -756,7 +747,6 @@
     'posix_getgrnam',
     'posix_getgroups',
     'posix_getlogin',
-    'posix_getpgid',
     'posix_getpwuid',
     'posix_getrlimit',
     'posix_getsid',
@@ -969,7 +959,6 @@
     'solr_get_version',
     'spl_autoload_register',
     'spl_autoload_unregister',
-    'sprintf',
     'sqlsrv_begin_transaction',
     'sqlsrv_cancel',
     'sqlsrv_client_info',
@@ -1031,6 +1020,7 @@
     'stream_wrapper_register',
     'stream_wrapper_restore',
     'stream_wrapper_unregister',
+    'strftime',
     'strptime',
     'strtotime',
     'swoole_async_dns_lookup',
@@ -1043,7 +1033,6 @@
     'symlink',
     'syslog',
     'system',
-    'sys_getloadavg',
     'tempnam',
     'timezone_name_from_abbr',
     'time_nanosleep',
@@ -1058,7 +1047,6 @@
     'variant_date_to_timestamp',
     'variant_round',
     'virtual',
-    'vsprintf',
     'xdiff_file_bdiff',
     'xdiff_file_bpatch',
     'xdiff_file_diff',
@@ -1069,8 +1057,6 @@
     'xdiff_string_patch',
     'xdiff_string_patch_binary',
     'xmlrpc_set_type',
-    'xml_parser_create',
-    'xml_parser_create_ns',
     'xml_parser_free',
     'xml_set_character_data_handler',
     'xml_set_default_handler',
diff --git a/generated/gmp.php b/generated/gmp.php
index ccdb80c5..b2b88f6e 100644
--- a/generated/gmp.php
+++ b/generated/gmp.php
@@ -4,68 +4,6 @@
 
 use Safe\Exceptions\GmpException;
 
-/**
- * Calculates the binomial coefficient C(n, k).
- *
- * @param \GMP|string|int $n A GMP object, an integer or a numeric string.
- * @param int $k
- * @return \GMP Returns the binomial coefficient C(n, k).
- * @throws GmpException
- *
- */
-function gmp_binomial($n, int $k): \GMP
-{
-    error_clear_last();
-    $result = \gmp_binomial($n, $k);
-    if ($result === false) {
-        throw GmpException::createFromPhpError();
-    }
-    return $result;
-}
-
-
-/**
- * Export a GMP number to a binary string
- *
- * @param \GMP|string|int $num The GMP number being exported
- * @param int $word_size Default value is 1. The number of bytes in each chunk of binary data. This is mainly used in conjunction with the options parameter.
- * @param int $flags Default value is GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.
- * @return string Returns a string.
- * @throws GmpException
- *
- */
-function gmp_export($num, int $word_size = 1, int $flags = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN): string
-{
-    error_clear_last();
-    $result = \gmp_export($num, $word_size, $flags);
-    if ($result === false) {
-        throw GmpException::createFromPhpError();
-    }
-    return $result;
-}
-
-
-/**
- * Import a GMP number from a binary string
- *
- * @param string $data The binary string being imported
- * @param int $word_size Default value is 1. The number of bytes in each chunk of binary data. This is mainly used in conjunction with the options parameter.
- * @param int $flags Default value is GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.
- * @return \GMP Returns a GMP number.
- * @throws GmpException
- *
- */
-function gmp_import(string $data, int $word_size = 1, int $flags = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN): \GMP
-{
-    error_clear_last();
-    $result = \gmp_import($data, $word_size, $flags);
-    if ($result === false) {
-        throw GmpException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  *
  *
diff --git a/generated/mbstring.php b/generated/mbstring.php
index 60ead94a..58f77c48 100644
--- a/generated/mbstring.php
+++ b/generated/mbstring.php
@@ -599,34 +599,3 @@ function mb_split(string $pattern, string $string, int $limit = -1): array
     }
     return $result;
 }
-
-
-/**
- * This function will return an array of strings, it is a version of str_split with support for encodings of variable character size as well as fixed-size encodings of 1,2 or 4 byte characters.
- * If the length parameter is specified, the string is broken down into chunks of the specified length in characters (not bytes).
- * The encoding parameter can be optionally specified and it is good practice to do so.
- *
- * @param string $string The string to split into characters or chunks.
- * @param int $length If specified, each element of the returned array will be composed of multiple characters instead of a single character.
- * @param  $encoding The encoding
- * parameter is the character encoding. If it is omitted or NULL, the internal character
- * encoding value will be used.
- *
- * A string specifying one of the supported encodings.
- * @return array mb_str_split returns an array of strings.
- * @throws MbstringException
- *
- */
-function mb_str_split(string $string, int $length = 1, $encoding = null): array
-{
-    error_clear_last();
-    if ($encoding !== null) {
-        $result = \mb_str_split($string, $length, $encoding);
-    } else {
-        $result = \mb_str_split($string, $length);
-    }
-    if ($result === false) {
-        throw MbstringException::createFromPhpError();
-    }
-    return $result;
-}
diff --git a/generated/misc.php b/generated/misc.php
index e9ace6b3..3549b73a 100644
--- a/generated/misc.php
+++ b/generated/misc.php
@@ -444,27 +444,6 @@ function sleep(int $seconds): int
 }
 
 
-/**
- * Returns three samples representing the average system load
- * (the number of processes in the system run queue) over the last 1, 5 and 15
- * minutes, respectively. Returns FALSE on failure.
- *
- * @return array Returns an array with three samples (last 1, 5 and 15
- * minutes).
- * @throws MiscException
- *
- */
-function sys_getloadavg(): array
-{
-    error_clear_last();
-    $result = \sys_getloadavg();
-    if ($result === false) {
-        throw MiscException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Delays program execution for the given number of
  * seconds and nanoseconds.
diff --git a/generated/password.php b/generated/password.php
deleted file mode 100644
index 672e803c..00000000
--- a/generated/password.php
+++ /dev/null
@@ -1,128 +0,0 @@
-<?php
-
-namespace Safe;
-
-use Safe\Exceptions\PasswordException;
-
-/**
- * password_hash creates a new password hash using a strong one-way hashing
- * algorithm. password_hash is compatible with crypt.
- * Therefore, password hashes created by crypt can be used with
- * password_hash.
- *
- *
- *
- *
- * PASSWORD_DEFAULT - Use the bcrypt algorithm (default as of PHP 5.5.0).
- * Note that this constant is designed to change over time as new and stronger algorithms are added
- * to PHP. For that reason, the length of the result from using this identifier can change over
- * time. Therefore, it is recommended to store the result in a database column that can expand
- * beyond 60 characters (255 characters would be a good choice).
- *
- *
- *
- *
- * PASSWORD_BCRYPT - Use the CRYPT_BLOWFISH algorithm to
- * create the hash. This will produce a standard crypt compatible hash using
- * the "$2y$" identifier. The result will always be a 60 character string.
- *
- *
- *
- *
- * PASSWORD_ARGON2I - Use the Argon2i hashing algorithm to create the hash.
- * This algorithm is only available if PHP has been compiled with Argon2 support.
- *
- *
- *
- *
- * PASSWORD_ARGON2ID - Use the Argon2id hashing algorithm to create the hash.
- * This algorithm is only available if PHP has been compiled with Argon2 support.
- *
- *
- *
- *
- *
- *
- *
- * salt (string) - to manually provide a salt to use when hashing the password.
- * Note that this will override and prevent a salt from being automatically generated.
- *
- *
- * If omitted, a random salt will be generated by password_hash for
- * each password hashed. This is the intended mode of operation.
- *
- *
- *
- * The salt option is deprecated. It is now
- * preferred to simply use the salt that is generated by default.
- * As of PHP 8.0.0, an explicitly given salt is ignored.
- *
- *
- *
- *
- *
- * cost (int) - which denotes the algorithmic cost that should be used.
- * Examples of these values can be found on the crypt page.
- *
- *
- * If omitted, a default value of 10 will be used. This is a good
- * baseline cost, but you may want to consider increasing it depending on your hardware.
- *
- *
- *
- *
- *
- *
- *
- * memory_cost (int) - Maximum memory (in kibibytes) that may
- * be used to compute the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_MEMORY_COST.
- *
- *
- *
- *
- * time_cost (int) - Maximum amount of time it may
- * take to compute the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_TIME_COST.
- *
- *
- *
- *
- * threads (int) - Number of threads to use for computing
- * the Argon2 hash. Defaults to PASSWORD_ARGON2_DEFAULT_THREADS.
- *
- *
- *
- * Only available when PHP uses libargon2, not with libsodium implementation.
- *
- *
- *
- *
- *
- * @param string $password The user's password.
- *
- * Using the PASSWORD_BCRYPT as the
- * algorithm, will result
- * in the password parameter being truncated to a
- * maximum length of 72 characters.
- * @param int|string|null $algo A password algorithm constant denoting the algorithm to use when hashing the password.
- * @param array $options An associative array containing options. See the password algorithm constants for documentation on the supported options for each algorithm.
- *
- * If omitted, a random salt will be created and the default cost will be
- * used.
- * @return string Returns the hashed password.
- *
- * The used algorithm, cost and salt are returned as part of the hash. Therefore,
- * all information that's needed to verify the hash is included in it. This allows
- * the password_verify function to verify the hash without
- * needing separate storage for the salt or algorithm information.
- * @throws PasswordException
- *
- */
-function password_hash(string $password, $algo, array $options = []): string
-{
-    error_clear_last();
-    $result = \password_hash($password, $algo, $options);
-    if ($result === false) {
-        throw PasswordException::createFromPhpError();
-    }
-    return $result;
-}
diff --git a/generated/posix.php b/generated/posix.php
index 1532a9a5..26b77eaa 100644
--- a/generated/posix.php
+++ b/generated/posix.php
@@ -195,26 +195,6 @@ function posix_getlogin(): string
 }
 
 
-/**
- * Returns the process group identifier of the process
- * process_id.
- *
- * @param int $process_id The process id.
- * @return int Returns the identifier, as an int.
- * @throws PosixException
- *
- */
-function posix_getpgid(int $process_id): int
-{
-    error_clear_last();
-    $result = \posix_getpgid($process_id);
-    if ($result === false) {
-        throw PosixException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Returns an array of information about the user
  * referenced by the given user ID.
diff --git a/generated/strings.php b/generated/strings.php
index 45d5c226..2aa72339 100644
--- a/generated/strings.php
+++ b/generated/strings.php
@@ -23,58 +23,6 @@ function convert_uudecode(string $string): string
 }
 
 
-/**
- * Counts the number of occurrences of every byte-value (0..255) in
- * string and returns it in various ways.
- *
- * @param string $string The examined string.
- * @param int $mode See return values.
- * @return mixed Depending on mode
- * count_chars returns one of the following:
- *
- *
- *
- * 0 - an array with the byte-value as key and the frequency of
- * every byte as value.
- *
- *
- *
- *
- * 1 - same as 0 but only byte-values with a frequency greater
- * than zero are listed.
- *
- *
- *
- *
- * 2 - same as 0 but only byte-values with a frequency equal to
- * zero are listed.
- *
- *
- *
- *
- * 3 - a string containing all unique characters is returned.
- *
- *
- *
- *
- * 4 - a string containing all not used characters is returned.
- *
- *
- *
- * @throws StringsException
- *
- */
-function count_chars(string $string, int $mode = 0)
-{
-    error_clear_last();
-    $result = \count_chars($string, $mode);
-    if ($result === false) {
-        throw StringsException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Decodes a hexadecimally encoded binary string.
  *
@@ -119,40 +67,6 @@ function md5_file(string $filename, bool $binary = false): string
 }
 
 
-/**
- * Calculates the metaphone key of string.
- *
- * Similar to soundex metaphone creates the same key for
- * similar sounding words. It's more accurate than
- * soundex as it knows the basic rules of English
- * pronunciation.  The metaphone generated keys are of variable length.
- *
- * Metaphone was developed by Lawrence Philips
- * &lt;lphilips at verity dot com&gt;. It is described in ["Practical
- * Algorithms for Programmers", Binstock &amp; Rex, Addison Wesley,
- * 1995].
- *
- * @param string $string The input string.
- * @param int $max_phonemes This parameter restricts the returned metaphone key to
- * max_phonemes characters in length.
- * However, the resulting phonemes are always transcribed completely, so the
- * resulting string length may be slightly longer than max_phonemes.
- * The default value of 0 means no restriction.
- * @return string Returns the metaphone key as a string.
- * @throws StringsException
- *
- */
-function metaphone(string $string, int $max_phonemes = 0): string
-{
-    error_clear_last();
-    $result = \metaphone($string, $max_phonemes);
-    if ($result === false) {
-        throw StringsException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  *
  *
@@ -172,637 +86,3 @@ function sha1_file(string $filename, bool $binary = false): string
     }
     return $result;
 }
-
-
-/**
- * Returns a string produced according to the formatting string
- * format.
- *
- * @param string $format The format string is composed of zero or more directives:
- * ordinary characters (excluding %) that are
- * copied directly to the result and conversion
- * specifications, each of which results in fetching its
- * own parameter.
- *
- * A conversion specification follows this prototype:
- * %[argnum$][flags][width][.precision]specifier.
- *
- * An integer followed by a dollar sign $,
- * to specify which number argument to treat in the conversion.
- *
- *
- * Flags
- *
- *
- *
- * Flag
- * Description
- *
- *
- *
- *
- * -
- *
- * Left-justify within the given field width;
- * Right justification is the default
- *
- *
- *
- * +
- *
- * Prefix positive numbers with a plus sign
- * +; Default only negative
- * are prefixed with a negative sign.
- *
- *
- *
- * (space)
- *
- * Pads the result with spaces.
- * This is the default.
- *
- *
- *
- * 0
- *
- * Only left-pads numbers with zeros.
- * With s specifiers this can
- * also right-pad with zeros.
- *
- *
- *
- * '(char)
- *
- * Pads the result with the character (char).
- *
- *
- *
- *
- *
- *
- * An integer that says how many characters (minimum)
- * this conversion should result in.
- *
- * A period . followed by an integer
- * who's meaning depends on the specifier:
- *
- *
- *
- * For e, E,
- * f and F
- * specifiers: this is the number of digits to be printed
- * after the decimal point (by default, this is 6).
- *
- *
- *
- *
- * For g, G,
- * h and H
- * specifiers: this is the maximum number of significant
- * digits to be printed.
- *
- *
- *
- *
- * For s specifier: it acts as a cutoff point,
- * setting a maximum character limit to the string.
- *
- *
- *
- *
- *
- * If the period is specified without an explicit value for precision,
- * 0 is assumed.
- *
- *
- *
- *
- * Specifiers
- *
- *
- *
- * Specifier
- * Description
- *
- *
- *
- *
- * %
- *
- * A literal percent character. No argument is required.
- *
- *
- *
- * b
- *
- * The argument is treated as an integer and presented
- * as a binary number.
- *
- *
- *
- * c
- *
- * The argument is treated as an integer and presented
- * as the character with that ASCII.
- *
- *
- *
- * d
- *
- * The argument is treated as an integer and presented
- * as a (signed) decimal number.
- *
- *
- *
- * e
- *
- * The argument is treated as scientific notation (e.g. 1.2e+2).
- *
- *
- *
- * E
- *
- * Like the e specifier but uses
- * uppercase letter (e.g. 1.2E+2).
- *
- *
- *
- * f
- *
- * The argument is treated as a float and presented
- * as a floating-point number (locale aware).
- *
- *
- *
- * F
- *
- * The argument is treated as a float and presented
- * as a floating-point number (non-locale aware).
- *
- *
- *
- * g
- *
- *
- * General format.
- *
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- *
- * If P &gt; X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- *
- *
- *
- * G
- *
- * Like the g specifier but uses
- * E and f.
- *
- *
- *
- * h
- *
- * Like the g specifier but uses F.
- * Available as of PHP 8.0.0.
- *
- *
- *
- * H
- *
- * Like the g specifier but uses
- * E and F. Available as of PHP 8.0.0.
- *
- *
- *
- * o
- *
- * The argument is treated as an integer and presented
- * as an octal number.
- *
- *
- *
- * s
- *
- * The argument is treated and presented as a string.
- *
- *
- *
- * u
- *
- * The argument is treated as an integer and presented
- * as an unsigned decimal number.
- *
- *
- *
- * x
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with lowercase letters).
- *
- *
- *
- * X
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with uppercase letters).
- *
- *
- *
- *
- *
- *
- * General format.
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- * If P &gt; X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- * The c type specifier ignores padding and width
- *
- * Attempting to use a combination of the string and width specifiers with character sets that require more than one byte per character may result in unexpected results
- *
- * Variables will be co-erced to a suitable type for the specifier:
- *
- * Type Handling
- *
- *
- *
- * Type
- * Specifiers
- *
- *
- *
- *
- * string
- * s
- *
- *
- * int
- *
- * d,
- * u,
- * c,
- * o,
- * x,
- * X,
- * b
- *
- *
- *
- * float
- *
- * e,
- * E,
- * f,
- * F,
- * g,
- * G,
- * h,
- * H
- *
- *
- *
- *
- *
- * @param string|int|float|bool $values
- * @return string Returns a string produced according to the formatting string
- * format.
- * @throws StringsException
- *
- */
-function sprintf(string $format, ...$values): string
-{
-    error_clear_last();
-    if ($values !== []) {
-        $result = \sprintf($format, ...$values);
-    } else {
-        $result = \sprintf($format);
-    }
-    if ($result === false) {
-        throw StringsException::createFromPhpError();
-    }
-    return $result;
-}
-
-
-/**
- * Operates as sprintf but accepts an array of
- * arguments, rather than a variable number of arguments.
- *
- * @param string $format The format string is composed of zero or more directives:
- * ordinary characters (excluding %) that are
- * copied directly to the result and conversion
- * specifications, each of which results in fetching its
- * own parameter.
- *
- * A conversion specification follows this prototype:
- * %[argnum$][flags][width][.precision]specifier.
- *
- * An integer followed by a dollar sign $,
- * to specify which number argument to treat in the conversion.
- *
- *
- * Flags
- *
- *
- *
- * Flag
- * Description
- *
- *
- *
- *
- * -
- *
- * Left-justify within the given field width;
- * Right justification is the default
- *
- *
- *
- * +
- *
- * Prefix positive numbers with a plus sign
- * +; Default only negative
- * are prefixed with a negative sign.
- *
- *
- *
- * (space)
- *
- * Pads the result with spaces.
- * This is the default.
- *
- *
- *
- * 0
- *
- * Only left-pads numbers with zeros.
- * With s specifiers this can
- * also right-pad with zeros.
- *
- *
- *
- * '(char)
- *
- * Pads the result with the character (char).
- *
- *
- *
- *
- *
- *
- * An integer that says how many characters (minimum)
- * this conversion should result in.
- *
- * A period . followed by an integer
- * who's meaning depends on the specifier:
- *
- *
- *
- * For e, E,
- * f and F
- * specifiers: this is the number of digits to be printed
- * after the decimal point (by default, this is 6).
- *
- *
- *
- *
- * For g, G,
- * h and H
- * specifiers: this is the maximum number of significant
- * digits to be printed.
- *
- *
- *
- *
- * For s specifier: it acts as a cutoff point,
- * setting a maximum character limit to the string.
- *
- *
- *
- *
- *
- * If the period is specified without an explicit value for precision,
- * 0 is assumed.
- *
- *
- *
- *
- * Specifiers
- *
- *
- *
- * Specifier
- * Description
- *
- *
- *
- *
- * %
- *
- * A literal percent character. No argument is required.
- *
- *
- *
- * b
- *
- * The argument is treated as an integer and presented
- * as a binary number.
- *
- *
- *
- * c
- *
- * The argument is treated as an integer and presented
- * as the character with that ASCII.
- *
- *
- *
- * d
- *
- * The argument is treated as an integer and presented
- * as a (signed) decimal number.
- *
- *
- *
- * e
- *
- * The argument is treated as scientific notation (e.g. 1.2e+2).
- *
- *
- *
- * E
- *
- * Like the e specifier but uses
- * uppercase letter (e.g. 1.2E+2).
- *
- *
- *
- * f
- *
- * The argument is treated as a float and presented
- * as a floating-point number (locale aware).
- *
- *
- *
- * F
- *
- * The argument is treated as a float and presented
- * as a floating-point number (non-locale aware).
- *
- *
- *
- * g
- *
- *
- * General format.
- *
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- *
- * If P &gt; X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- *
- *
- *
- * G
- *
- * Like the g specifier but uses
- * E and f.
- *
- *
- *
- * h
- *
- * Like the g specifier but uses F.
- * Available as of PHP 8.0.0.
- *
- *
- *
- * H
- *
- * Like the g specifier but uses
- * E and F. Available as of PHP 8.0.0.
- *
- *
- *
- * o
- *
- * The argument is treated as an integer and presented
- * as an octal number.
- *
- *
- *
- * s
- *
- * The argument is treated and presented as a string.
- *
- *
- *
- * u
- *
- * The argument is treated as an integer and presented
- * as an unsigned decimal number.
- *
- *
- *
- * x
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with lowercase letters).
- *
- *
- *
- * X
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with uppercase letters).
- *
- *
- *
- *
- *
- *
- * General format.
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- * If P &gt; X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- * The c type specifier ignores padding and width
- *
- * Attempting to use a combination of the string and width specifiers with character sets that require more than one byte per character may result in unexpected results
- *
- * Variables will be co-erced to a suitable type for the specifier:
- *
- * Type Handling
- *
- *
- *
- * Type
- * Specifiers
- *
- *
- *
- *
- * string
- * s
- *
- *
- * int
- *
- * d,
- * u,
- * c,
- * o,
- * x,
- * X,
- * b
- *
- *
- *
- * float
- *
- * e,
- * E,
- * f,
- * F,
- * g,
- * G,
- * h,
- * H
- *
- *
- *
- *
- *
- * @param array $values
- * @return string Return array values as a formatted string according to
- * format.
- * @throws StringsException
- *
- */
-function vsprintf(string $format, array $values): string
-{
-    error_clear_last();
-    $result = \vsprintf($format, $values);
-    if ($result === false) {
-        throw StringsException::createFromPhpError();
-    }
-    return $result;
-}
diff --git a/generated/xml.php b/generated/xml.php
index a71e9101..6f2679dd 100644
--- a/generated/xml.php
+++ b/generated/xml.php
@@ -4,72 +4,6 @@
 
 use Safe\Exceptions\XmlException;
 
-/**
- * xml_parser_create_ns creates a new XML parser
- * with XML namespace support and returns a XMLParser
- * instance to be used by the other XML functions.
- *
- * @param string $encoding The input encoding is automatically detected, so that the
- * encoding parameter specifies only the output
- * encoding. The default output charset is UTF-8. The supported
- * encodings are ISO-8859-1, UTF-8 and
- * US-ASCII.
- * @param string $separator With a namespace aware parser tag parameters passed to the various
- * handler functions will consist of namespace and tag name separated by
- * the string specified in separator.
- * @return resource Returns a new XMLParser instance.
- * @throws XmlException
- *
- */
-function xml_parser_create_ns(string $encoding = null, string $separator = ":")
-{
-    error_clear_last();
-    if ($separator !== ":") {
-        $result = \xml_parser_create_ns($encoding, $separator);
-    } elseif ($encoding !== null) {
-        $result = \xml_parser_create_ns($encoding);
-    } else {
-        $result = \xml_parser_create_ns();
-    }
-    if ($result === false) {
-        throw XmlException::createFromPhpError();
-    }
-    return $result;
-}
-
-
-/**
- * xml_parser_create creates a new XML parser
- * and returns a XMLParser instance to be used by the
- * other XML functions.
- *
- * @param string $encoding The input
- * encoding is automatically detected, so that the
- * encoding parameter specifies only the output
- * encoding. If empty string is passed, the parser attempts to identify
- * which encoding the document is encoded in by looking at the heading 3 or
- * 4 bytes. The default output charset is UTF-8. The supported
- * encodings are ISO-8859-1, UTF-8 and
- * US-ASCII.
- * @return resource Returns a new XMLParser instance.
- * @throws XmlException
- *
- */
-function xml_parser_create(string $encoding = null)
-{
-    error_clear_last();
-    if ($encoding !== null) {
-        $result = \xml_parser_create($encoding);
-    } else {
-        $result = \xml_parser_create();
-    }
-    if ($result === false) {
-        throw XmlException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Frees the given XML parser.
  *
diff --git a/generated/zlib.php b/generated/zlib.php
index 59c139c2..db416aa3 100644
--- a/generated/zlib.php
+++ b/generated/zlib.php
@@ -366,6 +366,43 @@ function gzinflate(string $data, int $max_length = 0): string
 }
 
 
+/**
+ * Opens a gzip (.gz) file for reading or writing.
+ *
+ * gzopen can be used to read a file which is
+ * not in gzip format; in this case gzread will
+ * directly read from the file without decompression.
+ *
+ * @param string $filename The file name.
+ * @param string $mode As in fopen (rb or
+ * wb) but can also include a compression level
+ * (wb9) or a strategy: f for
+ * filtered data as in wb6f, h for
+ * Huffman only compression as in wb1h.
+ * (See the description of deflateInit2
+ * in zlib.h for
+ * more information about the strategy parameter.)
+ * @param int $use_include_path You can set this optional parameter to 1, if you
+ * want to search for the file in the include_path too.
+ * @return resource Returns a file pointer to the file opened, after that, everything you read
+ * from this file descriptor will be transparently decompressed and what you
+ * write gets compressed.
+ *
+ * If the open fails, the function returns FALSE.
+ * @throws ZlibException
+ *
+ */
+function gzopen(string $filename, string $mode, int $use_include_path = 0)
+{
+    error_clear_last();
+    $result = \gzopen($filename, $mode, $use_include_path);
+    if ($result === false) {
+        throw ZlibException::createFromPhpError();
+    }
+    return $result;
+}
+
+
 /**
  * Reads to EOF on the given gz-file pointer from the current position and
  * writes the (uncompressed) results to standard output.
diff --git a/generator/src/DocPage.php b/generator/src/DocPage.php
index 4124f1eb..8326aa63 100644
--- a/generator/src/DocPage.php
+++ b/generator/src/DocPage.php
@@ -57,79 +57,88 @@ public function detectFalsyFunction(): bool
             return false;
         }
 
-        if (preg_match('/&false;\s+on\s+error/m', $file)) {
+        // Only evaluate the text inside the `<refsect1 role="returnvalues">...</refsect1>` section of the doc page.
+        // This minimizes 'false positives', where text such as "returns false when ..." could be matched outside
+        // the function's dedicated Return Values section.
+        $returnValuesSection = $this->extractSection('returnvalues', $file);
+
+        if (preg_match('/[Tt]he function returns &false;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&false;\s+on\s+failure/m', $file)) {
+
+        if (preg_match('/&false;\s+on\s+error/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&false;\s+otherwise/m', $file) && !preg_match('/(returns\s+&true;|&true;\s+on\s+success|&true;\s+if)/im', $file)) {
+        if (preg_match('/&false;\s+on\s+failure/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/may\s+return\s+&false;/m', $file) && !preg_match('/(returns\s+&true;|&true;\s+on\s+success|&true;\s+if)/im', $file)) {
+        if (preg_match('/&false;\s+otherwise/m', $returnValuesSection) && !preg_match('/(returns\s+&true;|&true;\s+on\s+success|&true;\s+if)/im', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&false;\s+if\s+an\s+error\s+occurred/m', $file)) {
+        if (preg_match('/may\s+return\s+&false;/m', $returnValuesSection) && !preg_match('/(returns\s+&true;|&true;\s+on\s+success|&true;\s+if)/im', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&return.success;/m', $file)) {
+        if (preg_match('/&false;\s+if\s+an\s+error\s+occurred/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&return.nullorfalse;/m', $file)) {
+        if (preg_match('/&return.success;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&return.falseforfailure;/m', $file)) {
+        if (preg_match('/&return.nullorfalse;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&date.datetime.return.modifiedobjectorfalseforfailure;/m', $file)) {
+        if (preg_match('/&return.falseforfailure;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/ or &false; \\(and generates an error/m', $file)) {
+        if (preg_match('/&date.datetime.return.modifiedobjectorfalseforfailure;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&false;\s+if\s+the\s+number\s+of\s+elements\s+for\s+each\s+array\s+isn\'t\s+equal/m', $file)) {
+        if (preg_match('/ or &false; \\(and generates an error/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/If\s+the\s+call\s+fails,\s+it\s+will\s+return\s+&false;/m', $file)) {
+        if (preg_match('/&false;\s+if\s+the\s+number\s+of\s+elements\s+for\s+each\s+array\s+isn\'t\s+equal/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/Upon\s+failure,?\s+\<function\>[\w_]{1,15}?\<\/function\>\s+returns\s+&false;/m', $file)) {
+        if (preg_match('/If\s+the\s+call\s+fails,\s+it\s+will\s+return\s+&false;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/On\s+failure,\s+&false;\s+is\s+returned/m', $file)) {
+        if (preg_match('/Upon\s+failure,?\s+\<function\>[\w_]{1,15}?\<\/function\>\s+returns\s+&false;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/on\s+success,\s+otherwise\s+&false;\s+is\s+returned/m', $file)) {
+        if (preg_match('/On\s+failure,\s+&false;\s+is\s+returned/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/Returns.*on success[.\s\S]+Returns &false;\s+if/m', $file)) {
+        if (preg_match('/on\s+success,\s+otherwise\s+&false;\s+is\s+returned/m', $returnValuesSection)) {
+            return true;
+        }
+        if (preg_match('/Returns.*on success[.\s\S]+Returns &false;\s+if/m', $returnValuesSection)) {
             return true;
         }
 
-        if (preg_match('/&gd\.return\.identifier;/m', $file)) {
+        if (preg_match('/&gd\.return\.identifier;/m', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&gd\.return\.identifier;/m', $file)) {
+        if (preg_match('/&gd\.return\.identifier;/m', $returnValuesSection)) {
             return true;
         }
         //used for date
         if (preg_match('/If a non-numeric value is used for 
-   \<parameter\>timestamp\<\/parameter\>, &false; is returned/m', $file)) {
+   \<parameter\>timestamp\<\/parameter\>, &false; is returned/m', $returnValuesSection)) {
             return true;
         }
 
         //used to detect imagecreatefromstring
-        if (preg_match('/If the arguments are invalid, the function returns &false;/m', $file)) {
+        if (preg_match('/If the arguments are invalid, the function returns &false;/m', $returnValuesSection)) {
             return true;
         }
 
         //used to detect class_implements
-        if (preg_match("/&false; when the given class doesn't exist/m", $file)) {
+        if (preg_match("/&false; when the given class doesn't exist/m", $returnValuesSection)) {
             return true;
         }
 
         //used to detect get_headers and ldap_search
-        if (preg_match("/&false; on failure/m", $file)) {
+        if (preg_match("/&false; on failure/m", $returnValuesSection)) {
             return true;
         }
 
@@ -150,10 +159,15 @@ public function detectNullsyFunction(): bool
             return false;
         }
 
-        if (preg_match('/&null;\s+on\s+failure/', $file)) {
+        // Only evaluate the text inside the `<refsect1 role="returnvalues">...</refsect1>` section of the doc page.
+        // This minimizes 'false positives', where text such as "returns false when ..." could be matched outside
+        // the function's dedicated Return Values section.
+        $returnValuesSection = $this->extractSection('returnvalues', $file);
+
+        if (preg_match('/&null;\s+on\s+failure/', $returnValuesSection)) {
             return true;
         }
-        if (preg_match('/&null;\s+if\s+an\s+error\s+occurs/', $file)) {
+        if (preg_match('/&null;\s+if\s+an\s+error\s+occurs/', $returnValuesSection)) {
             return true;
         }
 
@@ -173,14 +187,15 @@ public function detectEmptyFunction(): bool
             return false;
         }
 
-        if (preg_match('/an\s+empty\s+string\s+on\s+error/', $file)) {
+        $returnValuesSection = $this->extractSection('returnvalues', $file);
+
+        if (preg_match('/an\s+empty\s+string\s+on\s+error/', $returnValuesSection)) {
             return true;
         }
 
         return false;
     }
 
-
     /**
      * @return \SimpleXMLElement[]
      */
@@ -197,8 +212,7 @@ public function getMethodSynopsis(): array
         // Only evaluate the synopsis inside the `<refsect1 role="description">...</refsect1>` section of the doc page.
         // Other synopses might occur in the `<refsect1 role="parameters">...</refsect1>` section, but these describe
         // handlers, callbacks, and other callable-type arguments, not the function itself.
-        preg_match_all('/<refsect1\s+role="description">[\s\S]*?<\/refsect1>/m', $file, $fileDescriptionSection);
-        $fileDescriptionSection = implode('', $this->arrayFlatten((array) $fileDescriptionSection));
+        $fileDescriptionSection = $this->extractSection('description', $file);
 
         if (!preg_match_all('/<\/?methodsynopsis[\s\S]*?>[\s\S]*?<\/methodsynopsis>/m', $fileDescriptionSection, $functions, PREG_SET_ORDER, 0)) {
             return [];
@@ -265,6 +279,15 @@ public function getModule(): string
         return $this->toCamelCase(\basename(\dirname($this->path, 2)));
     }
 
+    private function extractSection(string $sectionName, string $file): string
+    {
+        $regexpBase = '/<refsect1\s+role="%s">[\s\S]*?<\/refsect1>/m';
+        $regexpString = sprintf($regexpBase, preg_quote($sectionName, '/'));
+        preg_match_all($regexpString, $file, $output);
+        $output = implode('', $this->arrayFlatten((array) $output));
+        return $output;
+    }
+
     private function toCamelCase(string $str): string
     {
         $tokens = preg_split("/[_ ]+/", $str);
diff --git a/generator/tests/DocPageTest.php b/generator/tests/DocPageTest.php
index b5b4dbe7..c1c88f2c 100644
--- a/generator/tests/DocPageTest.php
+++ b/generator/tests/DocPageTest.php
@@ -20,6 +20,7 @@ public function testDetectFalsyFunction()
         $date = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/datetime/functions/date.xml');
         $classImplement = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/spl/functions/class-implements.xml');
         $getHeaders = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/url/functions/get-headers.xml');
+        $gzopen = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/zlib/functions/gzopen.xml');
         //$ldapSearch = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/ldap/functions/ldap-search.xml');
 
         $this->assertTrue($pregMatch->detectFalsyFunction());
@@ -34,6 +35,7 @@ public function testDetectFalsyFunction()
         $this->assertTrue($date->detectFalsyFunction());
         $this->assertTrue($classImplement->detectFalsyFunction());
         $this->assertTrue($getHeaders->detectFalsyFunction());
+        $this->assertTrue($gzopen->detectFalsyFunction());
         //$this->assertTrue($ldapSearch->detectFalsyFunction());
     }
 
diff --git a/lib/special_cases.php b/lib/special_cases.php
index ecfab1b9..70d403d7 100644
--- a/lib/special_cases.php
+++ b/lib/special_cases.php
@@ -7,8 +7,11 @@
 
 namespace Safe;
 
-use Safe\Exceptions\SocketsException;
 use const PREG_NO_ERROR;
+
+use Safe\Exceptions\MiscException;
+use Safe\Exceptions\PosixException;
+use Safe\Exceptions\SocketsException;
 use Safe\Exceptions\ApcException;
 use Safe\Exceptions\ApcuException;
 use Safe\Exceptions\JsonException;
@@ -321,3 +324,42 @@ function simplexml_load_string(string $data, string $class_name = \SimpleXMLElem
     }
     return $result;
 }
+
+/**
+ * Returns three samples representing the average system load
+ * (the number of processes in the system run queue) over the last 1, 5 and 15
+ * minutes, respectively. Returns FALSE on failure.
+ *
+ * @return array<int,float> Returns an array with three samples (last 1, 5 and 15
+ * minutes).
+ * @throws MiscException
+ *
+ */
+function sys_getloadavg(): array
+{
+    error_clear_last();
+    $result = \sys_getloadavg();
+    if ($result === false) {
+        throw MiscException::createFromPhpError();
+    }
+    return $result;
+}
+
+/**
+ * Returns the process group identifier of the process
+ * process_id.
+ *
+ * @param int $process_id The process id.
+ * @return int Returns the identifier, as an int.
+ * @throws PosixException
+ *
+ */
+function posix_getpgid(int $process_id): int
+{
+    error_clear_last();
+    $result = \posix_getpgid($process_id);
+    if ($result === false) {
+        throw PosixException::createFromPhpError();
+    }
+    return $result;
+}
diff --git a/rector-migrate.php b/rector-migrate.php
index f075867e..7420c7f3 100644
--- a/rector-migrate.php
+++ b/rector-migrate.php
@@ -53,7 +53,6 @@
             'com_print_typeinfo' => 'Safe\com_print_typeinfo',
             'convert_uudecode' => 'Safe\convert_uudecode',
             'copy' => 'Safe\copy',
-            'count_chars' => 'Safe\count_chars',
             'create_function' => 'Safe\create_function',
             'cubrid_bind' => 'Safe\cubrid_bind',
             'cubrid_column_names' => 'Safe\cubrid_column_names',
@@ -114,7 +113,6 @@
             'curl_exec' => 'Safe\curl_exec',
             'curl_getinfo' => 'Safe\curl_getinfo',
             'curl_init' => 'Safe\curl_init',
-            'curl_multi_errno' => 'Safe\curl_multi_errno',
             'curl_multi_info_read' => 'Safe\curl_multi_info_read',
             'curl_multi_init' => 'Safe\curl_multi_init',
             'curl_multi_setopt' => 'Safe\curl_multi_setopt',
@@ -148,7 +146,6 @@
             'disk_total_space' => 'Safe\disk_total_space',
             'dl' => 'Safe\dl',
             'dns_get_record' => 'Safe\dns_get_record',
-            'dom_import_simplexml' => 'Safe\dom_import_simplexml',
             'eio_busy' => 'Safe\eio_busy',
             'eio_chmod' => 'Safe\eio_chmod',
             'eio_chown' => 'Safe\eio_chown',
@@ -260,9 +257,6 @@
             'get_meta_tags' => 'Safe\get_meta_tags',
             'glob' => 'Safe\glob',
             'gmmktime' => 'Safe\gmmktime',
-            'gmp_binomial' => 'Safe\gmp_binomial',
-            'gmp_export' => 'Safe\gmp_export',
-            'gmp_import' => 'Safe\gmp_import',
             'gmp_random_seed' => 'Safe\gmp_random_seed',
             'gmstrftime' => 'Safe\gmstrftime',
             'gnupg_adddecryptkey' => 'Safe\gnupg_adddecryptkey',
@@ -282,6 +276,7 @@
             'gzgets' => 'Safe\gzgets',
             'gzgetss' => 'Safe\gzgetss',
             'gzinflate' => 'Safe\gzinflate',
+            'gzopen' => 'Safe\gzopen',
             'gzpassthru' => 'Safe\gzpassthru',
             'gzread' => 'Safe\gzread',
             'gzrewind' => 'Safe\gzrewind',
@@ -465,7 +460,6 @@
             'inotify_rm_watch' => 'Safe\inotify_rm_watch',
             'iptcembed' => 'Safe\iptcembed',
             'iptcparse' => 'Safe\iptcparse',
-            'jdtounix' => 'Safe\jdtounix',
             'jpeg2wbmp' => 'Safe\jpeg2wbmp',
             'json_decode' => 'Safe\json_decode',
             'json_encode' => 'Safe\json_encode',
@@ -534,9 +528,7 @@
             'mb_regex_encoding' => 'Safe\mb_regex_encoding',
             'mb_send_mail' => 'Safe\mb_send_mail',
             'mb_split' => 'Safe\mb_split',
-            'mb_str_split' => 'Safe\mb_str_split',
             'md5_file' => 'Safe\md5_file',
-            'metaphone' => 'Safe\metaphone',
             'mime_content_type' => 'Safe\mime_content_type',
             'mkdir' => 'Safe\mkdir',
             'mktime' => 'Safe\mktime',
@@ -710,7 +702,6 @@
             'parse_ini_file' => 'Safe\parse_ini_file',
             'parse_ini_string' => 'Safe\parse_ini_string',
             'parse_url' => 'Safe\parse_url',
-            'password_hash' => 'Safe\password_hash',
             'pcntl_getpriority' => 'Safe\pcntl_getpriority',
             'pcntl_setpriority' => 'Safe\pcntl_setpriority',
             'pcntl_signal' => 'Safe\pcntl_signal',
@@ -766,7 +757,6 @@
             'posix_getgrnam' => 'Safe\posix_getgrnam',
             'posix_getgroups' => 'Safe\posix_getgroups',
             'posix_getlogin' => 'Safe\posix_getlogin',
-            'posix_getpgid' => 'Safe\posix_getpgid',
             'posix_getpwuid' => 'Safe\posix_getpwuid',
             'posix_getrlimit' => 'Safe\posix_getrlimit',
             'posix_getsid' => 'Safe\posix_getsid',
@@ -979,7 +969,6 @@
             'solr_get_version' => 'Safe\solr_get_version',
             'spl_autoload_register' => 'Safe\spl_autoload_register',
             'spl_autoload_unregister' => 'Safe\spl_autoload_unregister',
-            'sprintf' => 'Safe\sprintf',
             'sqlsrv_begin_transaction' => 'Safe\sqlsrv_begin_transaction',
             'sqlsrv_cancel' => 'Safe\sqlsrv_cancel',
             'sqlsrv_client_info' => 'Safe\sqlsrv_client_info',
@@ -1041,6 +1030,7 @@
             'stream_wrapper_register' => 'Safe\stream_wrapper_register',
             'stream_wrapper_restore' => 'Safe\stream_wrapper_restore',
             'stream_wrapper_unregister' => 'Safe\stream_wrapper_unregister',
+            'strftime' => 'Safe\strftime',
             'strptime' => 'Safe\strptime',
             'strtotime' => 'Safe\strtotime',
             'swoole_async_dns_lookup' => 'Safe\swoole_async_dns_lookup',
@@ -1053,7 +1043,6 @@
             'symlink' => 'Safe\symlink',
             'syslog' => 'Safe\syslog',
             'system' => 'Safe\system',
-            'sys_getloadavg' => 'Safe\sys_getloadavg',
             'tempnam' => 'Safe\tempnam',
             'timezone_name_from_abbr' => 'Safe\timezone_name_from_abbr',
             'time_nanosleep' => 'Safe\time_nanosleep',
@@ -1068,7 +1057,6 @@
             'variant_date_to_timestamp' => 'Safe\variant_date_to_timestamp',
             'variant_round' => 'Safe\variant_round',
             'virtual' => 'Safe\virtual',
-            'vsprintf' => 'Safe\vsprintf',
             'xdiff_file_bdiff' => 'Safe\xdiff_file_bdiff',
             'xdiff_file_bpatch' => 'Safe\xdiff_file_bpatch',
             'xdiff_file_diff' => 'Safe\xdiff_file_diff',
@@ -1079,8 +1067,6 @@
             'xdiff_string_patch' => 'Safe\xdiff_string_patch',
             'xdiff_string_patch_binary' => 'Safe\xdiff_string_patch_binary',
             'xmlrpc_set_type' => 'Safe\xmlrpc_set_type',
-            'xml_parser_create' => 'Safe\xml_parser_create',
-            'xml_parser_create_ns' => 'Safe\xml_parser_create_ns',
             'xml_parser_free' => 'Safe\xml_parser_free',
             'xml_set_character_data_handler' => 'Safe\xml_set_character_data_handler',
             'xml_set_default_handler' => 'Safe\xml_set_default_handler',