<?php namespace staabm\SideEffectsDetector; /** * @api */ final class SideEffect { /** * die, exit, throw. */ const PROCESS_EXIT = 'process_exit'; /** * class definition, func definition, include, require, global var, unset, goto */ const SCOPE_POLLUTION = 'scope_pollution'; /** * fwrite, unlink... */ const INPUT_OUTPUT = 'input_output'; /** * echo, print. */ const STANDARD_OUTPUT = 'standard_output'; /** * code for sure has side-effects, we don't have enough information to classify it. */ const UNKNOWN_CLASS = 'unknown_class'; /** * code might have side-effects, but we can't tell for sure. */ const MAYBE = 'maybe_has_side_effects'; private function __construct() { // nothing todo } }