Small php function that parses the argv array from a string.

cmdparser.php

<?php

function parse ($cmd)
{
    $out = array();
    $escape = '';
    $buffer = '';
    $last = '';
    $i = 0;
    while (empty($char = mb_substr($cmd, $i++, 1)) === false)
    {
        switch ($char)
        {
            case '\\':
                if ($last === '\\')
                {
                    $buffer .= '\\';
                }
                break;
            case '\'':
                if ($escape === '\'' && $last !== '\\')
                {
                    $out[] = $buffer;
                    $buffer = '';
                    $escape = '';
                }
                elseif ($escape === '')
                {
                    $escape = '\'';
                }
                else
                {
                    $buffer .= $char;
                }
                break;
            case '"':
                if ($escape === '"' && $last !== '\\')
                {
                    $out[] = $buffer;
                    $buffer = '';
                    $escape = '';
                }
                elseif ($escape === '')
                {
                    $escape = '"';
                }
                else
                {
                    $buffer .= $char;
                }
                break;
            case ' ':
                if ($escape === '' && $last !== '\\')
                {
                    if ($buffer !== '')
                    {
                        $out[] = $buffer;
                        $buffer = '';
                    }
                }
                else
                {
                    $buffer .= $char;
                }
                break;
            default:
                if ($char !== '\\')
                {
                    if ($last === '\\')
                    {
                        $buffer .= '\\';
                    }
                    $buffer .= $char;
                }
                break;
        }
        $last = $char;
    }
    if ($buffer !== '')
    {
        $out[] = $buffer;
    }
    return $out;
}