Best way to parse this response into an associative array?

Below is the response I'm getting after posting to an API.... I don't think parse_url is going to cut it. Are there any built in PHP functions or better ways to turn this into an array? This is the output of var_dump

sting(163) "response=3&responsetext=Duplicate transaction REFID:115545335&authcode=&transactionid=&avsresponse=&cvvresponse=&orderid=&type=auth&response_code=300&processor开发者_开发知识库_id=" 

Use parse_str() with the optional $arr parameter.

Parses str as if it were the query string passed via a URL

You are looking for parse_str.

It turns a query string into an associative array.

I propose :

$elements = explode('&', $input);
$data = array();
foreach($elements as $e) {
    $d = explode('=', $e);
    $data[$d[0]] = isset($d[1]) ? $d[1] : '';
}

But maybe there is a better way.