Online PHP editor | output for uu4Ki

<?php $array = array('id'=>array('1','2'),'post'=>array('tes','doang')); $placeholders = array(); foreach($array as $column => $value) { foreach ($value as $key => $value) { $pkey = ':' . $column . $key; $placeholders[$pkey] = $value; } } $pkeys = array_keys($placeholders); $value = $pkeys;