@ 2013-06-26T01:47:08Z <?php
$a = array(1, 2, 3, 4, 5);
$b = array_keys(function($i) { return $a[$i]*2; });
var_dump($b);
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, Closure given in /in/Zhtn6:5
Stack trace:
#0 /in/Zhtn6(5): array_keys(Object(Closure))
#1 {main}
thrown in /in/Zhtn6 on line 5
Process exited with code 255 . Output for 5.3.0 - 5.3.29 , 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 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 Warning: array_keys() expects parameter 1 to be array, object given in /in/Zhtn6 on line 5
NULL
Output for 4.4.2 - 4.4.9 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/Zhtn6 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 T_FUNCTION, expecting ')' in /in/Zhtn6 on line 5
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `')'' in /in/Zhtn6 on line 5
Process exited with code 255 . preferences:dark mode live preview
295.03 ms | 401 KiB | 456 Q