Just for fun, here is a compacted version:

commandline.php

<?php
function parseArgs($argv){
    array_shift($argv); $o = array();
    foreach ($argv as $a){
        if (substr($a,0,2) == '--'){ $eq = strpos($a,'=');
            if ($eq !== false){ $o[substr($a,2,$eq-2)] = substr($a,$eq+1); }
            else { $k = substr($a,2); if (!isset($o[$k])){ $o[$k] = true; } } }
        else if (substr($a,0,1) == '-'){
            if (substr($a,2,1) == '='){ $o[substr($a,1,1)] = substr($a,3); }
            else { foreach (str_split(substr($a,1)) as $k){ if (!isset($o[$k])){ $o[$k] = true; } } } }
        else { $o[] = $a; } }
    return $o;
}
?>

@see https://github.com/pwfisher/CommandLine.php