PHP TinyPHP大小限制 - 剥离空格/混淆

there's a really neat little program called TinyPHP, all it does is take out all whitespace, take out all comments, and replace variable names with shorter ones. its not much of an obfuscator but that, and my file being wrapped up in a phar, is good enough for me.

only problem is there is a size limit on the input, and i cant figure out how to increase it. cant find the parameter in the code. could someone please help? its just 3 pages. its here: https://github.com/mattgaidica/TinyPHP

thanks