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<?php $align = 8; $map = [ 'center' => 1, 'left' => 2, 'right' => 3 ]; if (array_key_exists($map, $align) && isset($map[$align])) { print_r("true"); } else { print_r("false"); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, int given in /in/jQ3Rp:10 Stack trace: #0 {main} thrown in /in/jQ3Rp on line 10
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_key_exists() expects parameter 2 to be array, int given in /in/jQ3Rp on line 10 false
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Warning: array_key_exists() expects parameter 2 to be array, integer given in /in/jQ3Rp on line 10 false
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/jQ3Rp on line 5
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/jQ3Rp on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/jQ3Rp on line 5
Process exited with code 255.

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