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<?php $array = [ 0 => [ 'val' => 3, 'param' => 2 ], 1 => [ 'val' => 3, 'param' => 10 ] ]; echo max(array_map( array_column($a, 'param'), $array ));
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 $a in /in/LZrXm on line 14 Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /in/LZrXm:14 Stack trace: #0 /in/LZrXm(14): array_column(NULL, 'param') #1 {main} thrown in /in/LZrXm on line 14
Process exited with code 255.
Output for 7.0.19 - 7.0.33, 7.1.5 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: a in /in/LZrXm on line 14 Warning: array_column() expects parameter 1 to be array, null given in /in/LZrXm on line 14 Notice: Array to string conversion in /in/LZrXm on line 15 Array
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: array_column() expects parameter 1 to be array, null given in /in/LZrXm on line 14 Array
Output for 7.0.0 - 7.0.18, 7.1.0 - 7.1.4
Notice: Undefined variable: a in /in/LZrXm on line 13 Warning: array_column() expects parameter 1 to be array, null given in /in/LZrXm on line 14 Notice: Array to string conversion in /in/LZrXm on line 14 Array
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Notice: Undefined variable: a in /in/LZrXm on line 14 Warning: array_column() expects parameter 1 to be array, null given in /in/LZrXm on line 14 Notice: Array to string conversion in /in/LZrXm on line 16 Array
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/LZrXm on line 14
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, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/LZrXm on line 2
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 '[' in /in/LZrXm on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LZrXm on line 2
Process exited with code 255.

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