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<?php $input = '((\'rats\' + \'stoats\') - 800 / 2)'; $tokens = token_get_all("<?php $input ?>"); $expr = ''; foreach($tokens as $token){ if(is_string($token)){ if(in_array($token, array('(', ')', '+', '-', '/', '*'), true)){ $expr .= $token; print "\n symbol: " . $expr; } continue; } list($id, $text) = $token; if(in_array($id, array(T_DNUMBER, T_LNUMBER,T_CONSTANT_ENCAPSED_STRING))){ $expr .= $text; print "\n number: " . $expr; } } eval("\$result = {$expr};"); print "\nexpr = " . $expr; print "\nres = " . $result;
Output for git.master, git.master_jit, rfc.property-hooks
symbol: ( symbol: (( number: (('rats' symbol: (('rats'+ number: (('rats'+'stoats' symbol: (('rats'+'stoats') symbol: (('rats'+'stoats')- number: (('rats'+'stoats')-800 symbol: (('rats'+'stoats')-800/ number: (('rats'+'stoats')-800/2 symbol: (('rats'+'stoats')-800/2) Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/mfObi(27) : eval()'d code:1 Stack trace: #0 /in/mfObi(27): eval() #1 {main} thrown in /in/mfObi(27) : eval()'d code on line 1
Process exited with code 255.

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