PHP implode_with_key(); Implode array with key and value

function explode_with_key($assoc, $indelimiter = '=', $outdelimiter = '|') {     $return = [];     $assoc = explode($outdelimiter, $assoc);     foreach ($assoc as $ts) {         list($key, $value) = explode($indelimiter, $ts);         $return[$key] = $value;     }     return $return; }