3v4l.org

run code in 300+ PHP versions simultaneously
<?php $person = ['a', 'b', 'c']; $names = array_map( function($person) { return $person[0]; }, $user_meta );
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $user_meta in /in/QaNZR on line 5 Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/QaNZR:3 Stack trace: #0 /in/QaNZR(3): array_map(Object(Closure), NULL) #1 {main} thrown in /in/QaNZR on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Undefined variable $user_meta in /in/QaNZR on line 5 Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/QaNZR:5 Stack trace: #0 /in/QaNZR(5): array_map(Object(Closure), NULL) #1 {main} thrown in /in/QaNZR on line 5
Process exited with code 255.
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: user_meta in /in/QaNZR on line 5 Warning: array_map(): Expected parameter 2 to be an array, null given in /in/QaNZR on line 5
Output for 7.3.32 - 7.3.33
Warning: array_map(): Expected parameter 2 to be an array, null given in /in/QaNZR on line 5
Output for 7.0.19 - 7.0.33, 7.1.5 - 7.1.33, 7.2.0 - 7.2.33
Notice: Undefined variable: user_meta in /in/QaNZR on line 5 Warning: array_map(): Argument #2 should be an array in /in/QaNZR on line 5
Output for 7.0.0 - 7.0.18, 7.1.0 - 7.1.4
Notice: Undefined variable: user_meta in /in/QaNZR on line 4 Warning: array_map(): Argument #2 should be an array in /in/QaNZR on line 4
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: user_meta in /in/QaNZR on line 6 Warning: array_map(): Argument #2 should be an array in /in/QaNZR on line 6

preferences:
285.42 ms | 402 KiB | 376 Q