3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ 't' => [1,2,3], 'b' => [4,5,6] ]; $return = array_map( function ($tasks) { return $tasks; }, $tasksByDays ); var_dump($return);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $tasksByDays in /in/3TLRX on line 12 Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/3TLRX:8 Stack trace: #0 /in/3TLRX(8): array_map(Object(Closure), NULL) #1 {main} thrown in /in/3TLRX on line 8
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Undefined variable $tasksByDays in /in/3TLRX on line 12 Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/3TLRX:12 Stack trace: #0 /in/3TLRX(12): array_map(Object(Closure), NULL) #1 {main} thrown in /in/3TLRX on line 12
Process exited with code 255.
Output for 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: tasksByDays in /in/3TLRX on line 12 Warning: array_map(): Expected parameter 2 to be an array, null given in /in/3TLRX on line 12 NULL
Output for 7.3.32 - 7.3.33
Warning: array_map(): Expected parameter 2 to be an array, null given in /in/3TLRX on line 12 NULL
Output for 7.0.20, 7.1.5 - 7.1.20, 7.2.0 - 7.2.33
Notice: Undefined variable: tasksByDays in /in/3TLRX on line 12 Warning: array_map(): Argument #2 should be an array in /in/3TLRX on line 12 NULL
Output for 7.0.0 - 7.0.6, 7.1.0
Notice: Undefined variable: tasksByDays in /in/3TLRX on line 11 Warning: array_map(): Argument #2 should be an array in /in/3TLRX on line 11 NULL
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Undefined variable: tasksByDays in /in/3TLRX on line 13 Warning: array_map(): Argument #2 should be an array in /in/3TLRX on line 13 NULL

preferences:
175.09 ms | 402 KiB | 183 Q