PHP Decode

<?php
#!/usr/bin/env php

set_time_limit(0);

if (isset($argv[1])) {
	$_SERVER['SYMFONY_VERSION'] = $argv[1];
}

$vendorDir = __DIR__;
$deps = array(
array('symfony', 'git://github.com/symfony/symfony.git', isset($_SERVER['SYMFONY_VERSION']) ? $_SERVER['SYMFONY_VERSION'] : 'origin/master'),
array('twig', 'git://github.com/fabpot/Twig.git', 'origin/master'),
array('twig_Extensions', 'http://github.com/fabpot/Twig-extensions.git', 'origin/master')
);

foreach ($deps as $dep) {
	list($name, $url, $rev) = $dep;

	echo "> Installing/Updating $name
";

	$installDir = $vendorDir.'/'.$name;
	if (!is_dir($installDir)) {
	$return = null;
		system(sprintf('git clone -q %s %s', escapeshellarg($url), escapeshellarg($installDir)), $return);
		if ($return > 0) {
		exit($return);
	}
	}

		$return = null;
		system(sprintf('cd %s && git fetch -q origin && git reset --hard %s', escapeshellarg($installDir), escapeshellarg($rev)), $return);
		if ($return > 0) {
		exit($return);
}
}
 ?>