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run code in 300+ PHP versions simultaneously
<?php if (!function_exists('cd')) { function cd($var) { var_dump($var); } } function corban_error_handler($errno , $errstr, $errfile, $errline) { if ( version_compare(PHP_VERSION, '5.0.0', '>=') ) { $file = new SplFileObject($errfile); $file->seek($errline-1); $c = substr(trim($file->current()), 0, 3); if ($c=='cd(' || $c=='cd ') { cd($c); } } return false; } set_error_handler ('corban_error_handler', E_NOTICE); var_dump($a); $b = null; cd($a); cd($b);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $a in /in/MMsdY on line 30 NULL Warning: Undefined variable $a in /in/MMsdY on line 32 NULL NULL
Output for 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 - 7.4.33
Notice: Undefined variable: a in /in/MMsdY on line 30 NULL string(3) "cd(" Notice: Undefined variable: a in /in/MMsdY on line 32 NULL NULL
Output for 7.3.32 - 7.3.33
NULL string(3) "cd(" NULL NULL
Output for 5.0.0 - 5.0.5
Fatal error: Class 'SplFileObject' not found in /in/MMsdY on line 16
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Warning: Wrong parameter count for set_error_handler() in /in/MMsdY on line 28 Notice: Undefined variable: a in /in/MMsdY on line 30 NULL Notice: Undefined variable: a in /in/MMsdY on line 32 NULL NULL

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292.93 ms | 402 KiB | 455 Q