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<?php $post = [ 'id_228' => 228, 'title_228' => "First", 'colour_228' => 'red', 'id_229' => 228, 'title_229' => "Second", 'colour_229' => 'blue']; // Transform data into a proper format $resultArray = []; foreach($post as $key => $val) { $key = explode('_',$key); $resultArray[$key[1]][$key[0]] = $val; } // Now do whatever you want to do var_dump($resultArray);

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