Stages:
Code → Tokens → Parsing → AST → Byte Code All looping structures are jumps Code analysis for Fun and Profit Collections branch with each individual step:
%https://github.com/derickr/php-src/tree/collections% *Tools* PHP's tokenizer: http://php.net/tokenizer Nikita's AST extension: https://github.com/nikic/php-ast VLD: https://pecl.php.net/vld