3v4l.org

run code in 300+ PHP versions simultaneously
<?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 .= $token; continue; } list($id, $text) = $token; if(in_array($id, array(T_DNUMBER, T_LNUMBER))) $expr .= $text; } print "\nexpr = " . $expr; print "\nres = " . $result;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
expr = ((800+20)-800/2) Warning: Undefined variable $result in /in/RO80Z on line 27 res =
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
expr = ((800+20)-800/2) Notice: Undefined variable: result in /in/RO80Z on line 27 res =
Output for 7.3.32 - 7.3.33, 7.4.26
expr = ((800+20)-800/2) res =
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
expr = ((800+20)-800/2) Notice: Undefined variable: result in /in/RO80Z on line 27 res =
preferences:
308.07 ms | 402 KiB | 460 Q