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<?php $a = [ [ 'id' => 123, ], [ 'id' => 124, ], [ 'id' => 125, ] ]; $b = array_map(function($item) { return $item['id']; }, $a); var_dump();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: var_dump() expects at least 1 argument, 0 given in /in/hKlcA:16 Stack trace: #0 /in/hKlcA(16): var_dump() #1 {main} thrown in /in/hKlcA on line 16
Process exited with code 255.

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