3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(1,2,3,4,5,6,7,8,9); $callback = function($element){ echo($element); }; function walk($a, $index, $callback){ if (count($a) == $index + 1) { $callback($a[$index]); } else { $callback($a[$index]); walk($a, $index + 1); } } walk($array);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ArgumentCountError: Too few arguments to function walk(), 1 passed in /in/5UK2s on line 25 and exactly 3 expected in /in/5UK2s:9 Stack trace: #0 /in/5UK2s(25): walk(Array) #1 {main} thrown in /in/5UK2s on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Warning: Missing argument 2 for walk(), called in /in/5UK2s on line 25 and defined in /in/5UK2s on line 9 Warning: Missing argument 3 for walk(), called in /in/5UK2s on line 25 and defined in /in/5UK2s on line 9 Notice: Undefined variable: index in /in/5UK2s on line 11 Notice: Undefined variable: callback in /in/5UK2s on line 17 Fatal error: Uncaught Error: Function name must be a string in /in/5UK2s:17 Stack trace: #0 /in/5UK2s(25): walk(Array) #1 {main} thrown in /in/5UK2s on line 17
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28
Warning: Missing argument 2 for walk(), called in /in/5UK2s on line 25 and defined in /in/5UK2s on line 9 Warning: Missing argument 3 for walk(), called in /in/5UK2s on line 25 and defined in /in/5UK2s on line 9 Notice: Undefined variable: index in /in/5UK2s on line 11 Notice: Undefined variable: callback in /in/5UK2s on line 17 Fatal error: Function name must be a string in /in/5UK2s on line 17
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/5UK2s on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/5UK2s on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/5UK2s on line 5
Process exited with code 255.
preferences:
243.78 ms | 401 KiB | 350 Q