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<?php $first = ['', 0, null]; $second = ['', 0, 1]; $firstResult = array_filter($first, function($item) { return empty($item); }); $secondResult = array_filter($second, function($item) { return !empty($item); }); var_dump($firstResult, $secondResult);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(0) "" [1]=> int(0) [2]=> NULL } array(1) { [2]=> int(1) }

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