3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array('order_source' => 'google', 'order_medium' => 'google-text'); function bqs($array, $qs='',$index = false) { foreach($array as $par => $val) { if($index) $par = $index; if(is_array($val)) { $qs .= bqs($val, $qs,$par); } else { $qs .= $par.'='.$val.'&'; } } return $qs; } echo $qss = bqs($arr);
based on os2X3
Output for 4.3.0 - 7.1.0
order_source=google&order_medium=google-text&