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<?php $arr = [0 => 23, 1 => 1, 2 => 22]; asort($arr); $redirect = array_pop($arr); var_dump(array_pop($arr)); var_dump(array_keys($redirect));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(22) Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, int given in /in/1SmtD:6 Stack trace: #0 /in/1SmtD(6): array_keys(23) #1 {main} thrown in /in/1SmtD on line 6
Process exited with code 255.
Output for 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
int(22) Warning: array_keys() expects parameter 1 to be array, int given in /in/1SmtD on line 6 NULL
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.8 - 7.2.33
int(22) Warning: array_keys() expects parameter 1 to be array, integer given in /in/1SmtD on line 6 NULL
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/1SmtD 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/1SmtD on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/1SmtD on line 2
Process exited with code 255.

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