Here's a utility function to parse command line arguments.
<?php
/**
 * CommandLine class
 *
 * @package Framework
 */
/**
 * Command Line Interface (CLI) utility class.
 *
 * @author Patrick Fisher <patrick@pwfisher.com>
 * @since August 21, 2009
 * @package Framework
 * @subpackage Env
 */
class CommandLine {
 /**
 * PARSE ARGUMENTS
 * 
 * [pfisher ~]$ echo "<?php
 * > include('CommandLine.php');
 * > \$args = CommandLine::parseArgs(\$_SERVER['argv']);
 * > echo "\n", '\$out = '; var_dump(\$args); echo "\n";
 * > ?>" > test.php
 * 
 * [pfisher ~]$ php test.php plain-arg --foo --bar=baz --funny="spam=eggs" --alsofunny=spam=eggs \
 * > 'plain arg 2' -abc -k=value "plain arg 3" --s="original" --s='overwrite' --s
 * 
 * $out = array(12) {
 * [0] => string(9) "plain-arg"
 * ["foo"] => bool(true)
 * ["bar"] => string(3) "baz"
 * ["funny"] => string(9) "spam=eggs"
 * ["alsofunny"] => string(9) "spam=eggs"
 * [1] => string(11) "plain arg 2"
 * ["a"] => bool(true)
 * ["b"] => bool(true)
 * ["c"] => bool(true)
 * ["k"] => string(5) "value"
 * [2] => string(11) "plain arg 3"
 * ["s"] => string(9) "overwrite"
 * }
 *
 * @author Patrick Fisher <patrick@pwfisher.com>
 * @since August 21, 2009
 * @see http://www.php.net/manual/en/features.commandline.php
 * #81042 function arguments($argv) by technorati at gmail dot com, 12-Feb-2008
 * #78651 function getArgs($args) by B Crawford, 22-Oct-2007
 * @usage $args = CommandLine::parseArgs($_SERVER['argv']);
 */
 public static function parseArgs($argv){
 
 array_shift($argv);
 $out = array();
 
 foreach ($argv as $arg){
 
 // --foo --bar=baz
 if (substr($arg,0,2) == '--'){
 $eqPos = strpos($arg,'=');
 
 // --foo
 if ($eqPos === false){
 $key = substr($arg,2);
 $value = isset($out[$key]) ? $out[$key] : true;
 $out[$key] = $value;
 }
 // --bar=baz
 else {
 $key = substr($arg,2,$eqPos-2);
 $value = substr($arg,$eqPos+1);
 $out[$key] = $value;
 }
 }
 // -k=value -abc
 else if (substr($arg,0,1) == '-'){
 
 // -k=value
 if (substr($arg,2,1) == '='){
 $key = substr($arg,1,1);
 $value = substr($arg,3);
 $out[$key] = $value;
 }
 // -abc
 else {
 $chars = str_split(substr($arg,1));
 foreach ($chars as $char){
 $key = $char;
 $value = isset($out[$key]) ? $out[$key] : true;
 $out[$key] = $value;
 }
 }
 }
 // plain-arg
 else {
 $value = $arg;
 $out[] = $value;
 }
 }
 return $out;
 }
}
?>