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<?php $test = [ 'a' => [], 'b' => ['total' => ['column' => '1']], 'c' => ['total' => ['column' => '2']], ]; var_dump(array_filter($test, function($v){ return isset($v['total'], $v['total']['column']); }));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["b"]=> array(1) { ["total"]=> array(1) { ["column"]=> string(1) "1" } } ["c"]=> array(1) { ["total"]=> array(1) { ["column"]=> string(1) "2" } } }

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