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<?php $input = '((800 + 20) - 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))){ $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: ((800 symbol: ((800+ number: ((800+20 symbol: ((800+20) symbol: ((800+20)- number: ((800+20)-800 symbol: ((800+20)-800/ number: ((800+20)-800/2 symbol: ((800+20)-800/2) expr = ((800+20)-800/2) res = 420

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