3v4l.org

run code in 500+ PHP versions simultaneously
<?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);

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106 ms | 2118 KiB | 5 Q