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<?php $a = array('a' => array(1), 'b' => array(2), 'c' => array(3)); var_dump(array_column($a, null, null));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> int(2) } [2]=> array(1) { [0]=> int(3) } }

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