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<?php $start = 6; $list = [ '1楼', '2楼', '3楼', '4楼', '5楼', ]; $list = array_flip( array_map( array_flip($list), function($key){ return $start+(int)$key; } ) );
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/gmOqO:8 Stack trace: #0 /in/gmOqO(8): array_map(Array, Object(Closure)) #1 {main} thrown in /in/gmOqO on line 8
Process exited with code 255.
Output for 8.1.0 - 8.1.28
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array must have exactly two members in /in/gmOqO:10 Stack trace: #0 /in/gmOqO(10): array_map(Array, Object(Closure)) #1 {main} thrown in /in/gmOqO on line 10
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback, array must have exactly two members in /in/gmOqO:10 Stack trace: #0 /in/gmOqO(10): array_map(Array, Object(Closure)) #1 {main} thrown in /in/gmOqO on line 10
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map() expects parameter 1 to be a valid callback, array must have exactly two members in /in/gmOqO on line 10 Warning: array_flip() expects parameter 1 to be array, null given in /in/gmOqO on line 10
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: array_map() expects parameter 1 to be a valid callback, array must have exactly two members in /in/gmOqO on line 11 Warning: array_flip() expects parameter 1 to be array, null given in /in/gmOqO on line 12

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