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<?php $arrays = [ [ ['A' => 'aaaaa'], ['A' => null], ['A' => null], ['A' => (float)666] ] ]; $arrays = array_map(function($x) { return array_filter($x, function($y) { return is_float($y['A']) || is_string($y['A']); }); }, $arrays); var_dump($arrays);

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