PHP Curl - Get Response headers with duplicate keys

Question

I'm having a hard time trying to parse response headers. Returned headers contain duplicate keys with the name of set-cookie which I'm trying to get along with the other headers but the problem is it overwrides the set-cookie value to the last one available. I know that we cannot have multiple name of the same key in an associative array, in that case what shuold I use to achieve this result?

[16] => set-cookie: GPS=1; Domain=.youtube.com; Expires=Sat, 14-Aug-2021 15:09:33 GMT; Path=/; Secure; HttpOnly
[17] => set-cookie: YSC=HYwhlVWBBfQ; Domain=.youtube.com; Path=/; Secure; HttpOnly; SameSite=none
[18] => set-cookie: VISITOR_INFO1_LIVE=E2nuslFFVxI; Domain=.youtube.com; Expires=Thu, 10-Feb-2022 14:39:33 GMT; Path=/; Secure; HttpOnly; SameSite=none

The script goes on forever if I include the while statement and if I remove it, it works fine but returning only the last set-cookie which is 18

$url = "https://www.youtube.com";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_NOBODY, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$resp = curl_exec($curl);
curl_close($curl);
$h = array_filter(explode("\n", $resp), 'trim');
$headers = [];
foreach ($h as $k => $v) {
    $l = explode(": ", $v); // Desired keys values here.
    if (strpos($v, 'HTTP') == true) {
        $headers['Headers']['status'] = $l[0];
    } elseif (strpos($v, 'set-cookie') !== false) {
        // $headers['Headers']['Cookies'][]['set-cookie'] = $l[1]; Works but return each cookie as array
        while (str_contains($v, 'set-cookie')) {
            $headers['Headers']['set-cookie'] = $l[1];
        }
    } else {
        $headers['Headers'][$l[0]] = $l[1];
    }
}

Mohsen Nazari · Accepted Answer · 2021-08-14 15:17:52Z

1

The reason you get an array using the code below is that you are exploding the header keys using : which it is also available in the content of cookie values.

You can implode the initial exploded array from index 1 and it should work fine, so the code would be:

$headers['Headers']['Cookies'][]['set-cookie'] = implode(':', array_slice($l, 1));

Another solution is that you replace the set-cookie: with empty string and use it.

$headers['Headers']['Cookies'][]['set-cookie'] = str_replace("set-cookie:",'', $v);

answered Aug 14, 2021 at 15:17

Mohsen Nazari

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