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<?php $arr = array(' foo ', ' bar '); array_walk( $mediaTypes, function (&$value) { $value = trim($value); } ); var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_walk(): Argument #1 ($array) must be of type array, null given in /in/K5A7C:4 Stack trace: #0 /in/K5A7C(4): array_walk(NULL, Object(Closure)) #1 {main} thrown in /in/K5A7C on line 4
Process exited with code 255.

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