PHP uses curl not rely on Cookiejar to get cookies _php tips

The example in this article describes how PHP uses curl to get cookies without relying on cookiejar. Share to everyone for your reference. The specific analysis is as follows:

PHP Curl class is a very good tool class, the specific how to not verbose.

It also has good support for the Cookie,curl class, but it is not flexible enough to be obtained by means of a variable method, and is implemented in the following ways.

Save cookies to Cookie.txt 
curl_setopt ($ch, Curlopt_cookiefile, ' cookie.txt '); 
curl_setopt ($ch, Curlopt_cookiejar, ' cookie.txt '); 

Save the cookie file for the first time, and read the file when it is called, which means two IO operations and how efficient it is, needless to say, everyone knows.
So is there a way to bypass the read file? Not suspense, directly on the code:

Initialization of curl 
$ch = Curl_init (); 
curl_setopt ($ch, Curlopt_url, $url); 
information 
curl_setopt ($ch, Curlopt_header, 1); 
Returns the raw (raw) output 
curl_setopt ($ch, Curlopt_returntransfer, true); 
Executes and obtains the return result 
$content = curl_exec ($ch); 
Closure of Curl 
curl_close ($ch); 
Parsing HTTP Data Flow 
list ($header, $body) = Explode ("\r\n\r\n", $content); 
Parse Cookie 
preg_match ("/set\-cookie: ([^\r\n]*)/I", $header, $matches); 
The latter can be directly used 
//curl_setopt ($ch, Curlopt_cookie, $cookie) when submitted with curl; 
$cookie = $matches [1]; 

I hope this article will help you with your PHP program design.