Reading data from com port not full

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Tested on Gentoo Linux, Centos linux
I have gprs modem works via ftdi....

0. connects
$serial = new phpSerial;
$serial->deviceSet("ttyUSB0");
$serial->confBaudRate(115200);
$serial->deviceOpen();
$recieved_sms=pdu_read_recieved_sms();
$serial->deviceClose();

1. echo at+cmgl=4 > /dev/ttyUSB0  && cat /dev/ttyUSB0
 if i reapeat this cmd, data loads full! this is fine
2. if i load data from php ver 5.5.10
function pdu_read_recieved_sms($waitForReply = 0.1){
    global $serial; $read='';
    $serial->sendMessage("AT+CMGL=4".PHP_EOL,$waitForReply);
// Wait and read from the port
//sleep(2);
$read .= $serial->readPort();
print $read;
if(!empty($read)){
    preg_match_all("/07[A-Z0-9]*/i", $read,$matches);
    if(is_array($matches) && sizeof($matches)>0){
        return $matches[0];
    }else{ 
        return false;
        }
    }else{ 
        return false;
    }
}
3. if i read
$timeout=microtime(true)+10;
do{ 
$c=fread($this->_dHandle,128);
$content.=$c;
}while(microtime(true)<$timeout);

full data reads in 80 percents

may be script issue?
please help to fix this problem

Original issue reported on code.google.com by [email protected] on 26 Mar 2014 at 1:27

Attachments:

• [php read return.txt](https://storage.googleapis.com/google-code-attachments/php-serial/issue-20/comment-0/php read return.txt)
• [linux cmd read.txt](https://storage.googleapis.com/google-code-attachments/php-serial/issue-20/comment-0/linux cmd read.txt)