PHP function to minify JavaScript code using Google Closure Compiler

minify.php

<?php

/**
 * Minifies JavaScript code using Google Closure Compiler.
 *
 * @param	String		$code
 *    JavaScript code to reduce
 *
 * @param	String		$level
 *    Type of compression of the code.
 *    Valid values are: "WHITESPACE_ONLY", "SIMPLE_OPTIMIZATIONS" and "ADVANCED_OPTIMIZATIONS".
 *
 * @return	String
 *    The minified equivalent (or the same code if there was a problem accessing the webservice)
 *
 * @see Closure compilation levels
 *    https://developers.google.com/closure/compiler/docs/compilation_levels
 *
 */
function minify_javascript($code, $level = 'SIMPLE_OPTIMIZATIONS'){
	try {
		$ch = curl_init('http://closure-compiler.appspot.com/compile'); 
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, 'output_info=compiled_code&output_format=text&compilation_level=' . $level . '&js_code=' . urlencode($code));
		$minified = curl_exec($ch);
		curl_close($ch);
	} catch (Exception $e) {
		$minified = $code;
	}
	return $minified;
}

?>