gistfile1.txt

#!/usr/bin/env php
<?php
define('FILENAME', 'core.min.js');
define('GATEWAY', 'http://closure-compiler.appspot.com/compile');

$args = array();
$args['js_code'] = file_get_contents($argv[1]);
$args['compilation_level'] = 'SIMPLE_OPTIMIZATIONS';
$args['output_format'] = 'json';
$args['output_info'] = 'compiled_code';

$handler = curl_init();
curl_setopt($handler, CURLOPT_URL, GATEWAY);
curl_setopt($handler, CURLOPT_POST, true);
curl_setopt($handler, CURLOPT_POSTFIELDS, http_build_query($args));
curl_setopt($handler, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($handler);

if (false === $response)
  echo "An error occured while trying to compress javascript source !\n";
else
{
  $responseObject = json_decode($response);
  file_put_contents(FILENAME, $responseObject->compiledCode);
}