file_get_contents receive cookies
There's a magic variable for this, called $http_response_header
; it's an array comprising all headers that were received. To extract the cookies you have to filter out the headers that start with Set-Cookie:
.
file_get_contents('http://example.org');$cookies = array();foreach ($http_response_header as $hdr) { if (preg_match('/^Set-Cookie:\s*([^;]+)/', $hdr, $matches)) { parse_str($matches[1], $tmp); $cookies += $tmp; }}print_r($cookies);
An equivalent but less magical approach would be to use stream_get_meta_data()
:
if (false !== ($f = fopen('http://www.example.org', 'r'))) { $meta = stream_get_meta_data($f); $headers = $meta['wrapper_data']; $contents = stream_get_contents($f); fclose($f);}// $headers now contains the same array as $http_response_header
you should use cURL
for that purpose, cURL
implement a feature called the cookie jar which permit to save cookies in a file and reuse them for subsequent request(s).
Here come a quick code snipet how to do it:
/* STEP 1. let’s create a cookie file */$ckfile = tempnam ("/tmp", "CURLCOOKIE");/* STEP 2. visit the homepage to set the cookie properly */$ch = curl_init ("http://somedomain.com/");curl_setopt ($ch, CURLOPT_COOKIEJAR, $ckfile); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);$output = curl_exec ($ch);/* STEP 3. visit cookiepage.php */$ch = curl_init ("http://somedomain.com/cookiepage.php");curl_setopt ($ch, CURLOPT_COOKIEFILE, $ckfile); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);$output = curl_exec ($ch);
note: has to be noted you should have the pecl extension (or compiled in PHP) installed or you won't have access to the cURL API.
I realize this is, late, but there is actually a way to at least receive individual cookies sent by the server.
I'm assuming you know how to do the whole stream_create_context business to get your file_get_contents http request rolling, and you just need assistance actually setting the cookies.
After running file_get_contents on a url, the (unfortunately, non-associative) array $http_response_header is set.
If the server is sending back a cookie, one of them will start with 'Set-Cookie: ', which you can extract with substr.
However, at the moment, it appears to me that one can only access -one- Set-Cookie through this variable, which is a limitation I am currently trying to find a way to work around.