Online PHP editor | refs for pd5HH

<?php $arr = array( Array('weight' => '317.51474856007','reps' => '10'), Array('weight' => 50,'reps' => 10), Array('reps' => 10), Array('reps' => 10) ); array_walk_recursive($arr, function($v, $k) use ($count){if(array_key_exists($k, $count))$count[$k]++;else $count[$k]=1;});