moved the non-UCS-2 character replacement to PDOStatement#bindValue

Doctrine/DBAL/Driver/PDODblib/Connection.php

@@ -30,6 +30,13 @@ class Connection extends \Doctrine\DBAL\Driver\PDOConnection implements \Doctrin
 
     protected $_pdoTransactionsSupport = null;
     protected $_pdoLastInsertIdSupport = null;
+
+    public function __construct($dsn, $user = null, $password = null, $options = null)
+    {
+        parent::__construct($dsn, $user, $password, $options);
+        $this->setAttribute(\PDO::ATTR_STATEMENT_CLASS, array(__NAMESPACE__ . '\PDOStatement', array()));
+    }
+
     /**
      * @override
      */
@@ -38,21 +45,9 @@ public function quote($value, $type = \PDO::PARAM_STR) {
 
         // Fix for a driver version terminating all values with null byte
         $val = rtrim($val, "\0");
-
-        // Freetds communicates with the server using UCS-2 (since v7.0).
-        // Freetds claims to convert from any given client charset to UCS-2 using iconv. Which should strip or replace unsupported chars. 
-        // However in my experience, characters like 👍 (THUMBS UP SIGN, \u1F44D) end up in MSSQL shouting 'incorrect syntax' still.
-        $val = static::replaceNonUcs2Chars($val);
 
         return $val;
     }
-
-    public static function replaceNonUcs2Chars($val)
-    {
-        // UCS-2 cannot represent unicode code points outside the BMP. (> 16 bits.)
-        // Replace those chars with the REPLACEMENT CHARACTER.
-        return preg_replace('/[^\x{0}-x{FFFF}]/u', "\xFFFD", $val);
-    }
 
     /**
      * @return bool PDO_DBlib transaction support

Doctrine/DBAL/Driver/PDODblib/PDOStatement.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Lsw\DoctrinePdoDblib\Doctrine\DBAL\Driver\PDODblib;
+
+class PDOStatement extends \Doctrine\DBAL\Driver\PDOStatement
+{
+
+    /**
+     * {@inheritdoc}
+     * 
+     * Freetds communicates with the server using UCS-2 (since v7.0).
+     * Freetds claims to convert from any given client charset to UCS-2 using iconv. Which should strip or replace unsupported chars. 
+     * However in my experience, characters like 👍 (THUMBS UP SIGN, \u1F44D) still end up in Sqlsrv shouting '102 incorrect syntax'.
+     * Upon binding a value, this function replaces the unsupported characters.
+     */
+    public function bindValue($param, $value, $type = \PDO::PARAM_STR)
+    {
+        if ($type == \PDO::PARAM_STR) {
+            $value = static::replaceNonUcs2Chars($value);
+        }
+        return parent::bindValue($param, $value, $type);
+    }
+
+    /**
+     * UCS-2 cannot represent Unicode code points outside the BMP. (> 16 bits.)
+     * This function replaces those characters in a string with the REPLACEMENT CHARACTER.
+     * @param string $val
+     * @return string
+     */
+    public static function replaceNonUcs2Chars($val)
+    {
+        return is_string($val) ? \preg_replace('/[^\x{0}-x{FFFF}]/u', "�", $val) : $val;
+    }
+
+
+}