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<?php $data = [ [['foo'=>''], ['bar'=>'a']], [['foo'=>'b'], ['bar'=>'c']], [['foo'=>'e'], ['bar'=>'']] ]; $data = array_filter($data, function($x) { return array_filter($x, function($y) { return array_filter($y) == $y; }) == $x; }); var_dump($data);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [1]=> array(2) { [0]=> array(1) { ["foo"]=> string(1) "b" } [1]=> array(1) { ["bar"]=> string(1) "c" } } }

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