php curl simulates login and obtains web page content

class CURL
{
var $cookie_file; //Set the cookie file saving path and file name
var $loginurl; //Login address
var $actionstr; / /Login parameters
function __construct()
{
 $this->cookie_file=tempnam("./TEMP","COOKIedsdsdsdsdsdwerwdszx454.txt");
}
function vlogin()
 { //Simulated login by bbs.it-home.org
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL,$this->loginurl);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// Whether to display data 0 means displaying 1 or not displaying
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $this->actionstr);
 curl_setopt($ch,CURLOPT_COOKIEJAR,$this-> cookie_file);
 $data = curl_exec($ch);
 curl_close($ch);
}
function gethtml($url)
{ //Get web page content php simulated login
 $ curl = curl_init(); // Start a CURL session
 curl_setopt($curl, CURLOPT_URL, $url); // The address to be accessed
 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // Check the source of the authentication certificate
 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1); // Check whether the SSL encryption algorithm exists from the certificate
 curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // Simulate the browser used by the user
 curl_setopt($ curl, CURLOPT_FOLLOWLOCATION, 1); // Use automatic redirect
 curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // Automatically set Referer
 curl_setopt($curl, CURLOPT_HTTPGET, 1); // Send a regular Post request
 curl_setopt ($curl, CURLOPT_COOKIEFILE, $this->cookie_file); // Read the cookie information stored above
 curl_setopt($curl, CURLOPT_TIMEOUT, 30); // Set timeout limit to prevent infinite loop
 curl_setopt($curl, CURLOPT_HEADER , 0); // Display the returned Header area content
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // The obtained information is returned in the form of a file stream
 $tmpInfo = curl_exec($curl); // Execute the operation
 if (curl_errno($curl)) {
 echo 'Errno'.curl_error($curl);
 }
 curl_close($curl); // Close CURL session
 return $tmpInfo; // Return data

}
}
$ host="http://192.168.0.2";
$mycurl=new CURL();
$mycurl->actionstr="user_name=111&uspassword=111";
$mycurl->loginurl=$host."/ admin/login.php";
$mycurl->vlogin();//Log in
$htmlcontent=$mycurl->gethtml($host."/user.php?id=123");//Get this The content of the page
echo $htmlcontent;//Display the content of this page
//Successfully obtained

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