obfuscate javascript code with php

Question

I have a question about a javascript code obfuscator made in php.. https://damidev.000webhostapp.com

someone can help me understand how this guy did to generate ?

Answer 1

Today most projects with serious javascript development end up doing this with nodejs and webpack as part of the process of build.

With PHP, searching fast I found this library, the PHP-Packer.

Basically with it you pass the javascript code and it returns you the obfuscated code.

 $js = file_get_contents('test.js');
 $packer = new Tholu\Packer\Packer($js, 'Normal', true, false, true);
 $packed_js = $packer->pack();
 echo $packed_js;