Google Closure Compiler with PHP

Today Google released their new Closure Compiler , you can use it to optimize and minify your javascripts.

 

Now i show you how to use the new Google Closure Compiler over the RESTful API with PHP5. First of all, you don’t need to install anything, we will connect the free API via cURL usually activated in PHP5.

The API (see reference ) resides under the following URL and requires four params:

http://closure-compiler.appspot.com/compile

compilation_level




is one of three options: WHITESPACE_ONLY, SIMPLE_OPTIMIZATIONS, ADVANCED_OPTIMIZATIONS,


i use simple optimizations, it don't need further config (like advanced) but is


better than whitespace only.





output_format




is "text" if you want compile a javascript





output_info




is "compiled_code" if you want compile a javascript





js_code




is your javascript source code, instead you can submit "code_url" param, an url


to a javascript-file

enough with theory, now the PHP code:

$script = file_get_contents('http://www.domain.com/scripts/script.js');

$ch = curl_init('http://closure-compiler.appspot.com/compile');

 

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, 'output_info=compiled_code&output_format=text&compilation_level=SIMPLE_OPTIMIZATIONS&js_code=' . urlencode($script));

$output = curl_exec($ch);

curl_close($ch);

i use it in a deployer script and replace the content of my script files with the compiled versions. you can tryout the compiler with a simple html-form