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<?php $input = '$x=100; ((800 + 20) - 800 / 2)'; $tokens = token_get_all("<?php {$input}"); $expr = ''; foreach($tokens as $token){ echo $token."<br>"; if(is_string($token)){ if(in_array($token, array('(', ')', '+', '-', '/', '*','if','IF' , '{' ,'}' , ';' ,'$'), true)) $expr .= $token; continue; } list($id, $text) = $token; if(in_array($id, array(T_DNUMBER, T_LNUMBER))) $expr .= $text; } eval("\$result = {$expr};"); print "\nexpr = " . $expr; print "\nres = " . $result;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>=<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>;<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>(<br>(<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>+<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>)<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>-<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>/<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br> Warning: Array to string conversion in /in/cs1pv on line 9 Array<br>)<br> expr = 100;((800+20)-800/2) res = 100

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