proc_open.php

<?php
public static function my_exec($cmd, $input = '', $outputFile = ''){

    $proc = proc_open($cmd, array(0 => array('pipe', 'r'), 1 => array('pipe', 'w'), 2 => array('file', $outputFile, 'w')), $pipes);
    fwrite($pipes[0], $input);
    fclose($pipes[0]);
    $stdout = stream_get_contents($pipes[1]);fclose($pipes[1]);
    $rtn = proc_close($proc);
    return array(
        'stdout'=>$stdout,
        'return'=>$rtn
    );
}