PHP CURL simulated login to SINA Weibo

There is a need at work recently. I need to obtain the data of http://weibo.com/at/weibo, which is @myself's data. There is no interface and can only be obtained by grabbing the page. Here is some code From: http://summerbluet.com/704

/**
 * Used to simulate Sina Weibo login! by CJ ( http://www.summerbluet.com )
*/

/**Define project path*/
define('PROJECT_ROOT_PATH' , dirname(__FILE__));
define('COOKIE_PATH' , PROJECT_ROOT_PATH );

// Universal timestamp
define('TIMESTAMP', time());

// Can be turned on when a problem occurs. For debugging, a LOG file will be created under the current folder
define('DEBUG', false);

/**Sina account used for simulated login*/
$username = "";
$password = "";

/* Fire Up */
$weiboLogin = new weiboLogin( $username, $password );
 exit($weiboLogin->showTestPage( 'http://weibo.com/at/comment' ));

class weiboLogin {

 private $cookiefile;
 private $username;
 private $password;

 function __construct ( $username, $password )
 {
 ( $username =='' || $password=='' ) && exit( "Please fill in the username and password" );

 $this->cookiefile = COOKIE_PATH.' /cookie_sina_'.substr(base64_encode($username), 0, 10);
 $this->username = $username;
 $this->password = $password;
 }

 /**
 * CURL request
 * @param String $url request address
 * @param Array $data request data
* /
 function curlRequest($url, $data = false)
 {
 $ch = curl_init();

 $option = array(
 CURLOPT_URL => $url,
 CURLOPT_HEADER => 0,
 CURLOPT_HTTPHEADER => array('Accept-Language: zh-cn','Connection: Keep-Alive','Cache-Control: no-cache'),
 CURLOPT_USERAGENT => "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.79 Safari/537.1",
 CURLOPT_FOLLOWLOCATION => TRUE,
 CURLOPT_MAXREDIRS => 4,
 CURLOPT_RETURNTRANSFER => TRUE,
 CURLOPT_COOKIEJAR => $ this->cookiefile,
 CURLOPT_COOKIEFILE => option);
 $response = curl_exec($ch);

 if (curl_errno($ch) > 0) {
 exit("CURL ERROR:$url " . curl_error($ch));
 }
 curl_close( $ch);
 return $response;
 }

 /**@desc CURL simulates Sina login*/
 function doSinaLogin()
 {
 // Step 1: Get tickit
 $preLoginData = $this->curlRequest('http: //login.sina.com.cn/sso/prelogin.php?entry=weibo&callback=sinaSSOController.preloginCallBack&su=' .
 base64_encode($this->username) . '&client=ssologin.js(v1.3.16)') ;
 preg_match('/sinaSSOController.preloginCallBack((.*))/', $preLoginData, $preArr);
 $jsonArr = json_decode($preArr[1], true);

 $this->debug(' debug_1_Tickit', $preArr[1]);

 if (is_array($jsonArr)) {
 // Step 2: Do Certification
 $postArr = array( 'entry' => 'weibo',
 'gateway' = > 1,
 'from' => '',
 'vsnval' => '',
 'savestate' => 7,
 'useticket' => 1,
 'ssosimplelogin' => 1 ,
 'su' => base64_encode(urlencode($this->username)),
 'service' => 'miniblog',
 'servertime' => $jsonArr['servertime'],
 'nonce ' => $jsonArr['nonce'],
 'pwencode' => 'wsse',
 'sp' => sha1(sha1(sha1($this->password)) . $jsonArr['servertime '] . $jsonArr['nonce']),
 'encoding' => 'UTF-8',
 'url' => 'http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent .sinaSSOController.feedBackUrlCallBack',
 'returntype' => 'META');

 $loginData = $this->curlRequest('http://login.sina.com.cn/sso/login.php?client =ssologin.js(v1.3.19)', $postArr);

 $this->debug('debug_2_Certification_raw', $loginData);

 // Step 3: SSOLoginState
 if ($loginData) {

 $ matches = $loginResultArr =array();
 preg_match('/replace('(.*?)')/', $loginData, $matchs);

 $this->debug('debug_3_Certification_result', $matchs[ 1]);

 $loginResult = $this->curlRequest( $matchs[1] );
 preg_match('/feedBackUrlCallBack((.*?))/', $loginResult, $loginResultArr);

 $userInfo = json_decode($loginResultArr[1],true);

 $this->debug('debug_4_UserInfo', $loginResultArr[1]);
 } else {
 exit('Login sina fail.');
 }
 } else {
 exit('Server tickit fail');
 }
 }

 /**Test login situation, call reference*/
 function showTestPage( $url ) {
 $file_holder = $this->curlRequest( $url );

 // If not logged in, try again after logging in
 $isLogin = strpos( $file_holder, 'class="user_name"');
 if ( !$isLogin ){
 unset($file_holder);
 $this->doSinaLogin();
 $file_holder = $this->curlRequest( $url );
 }
 return $file_holder ;
 }

 /**debug*/
 function debug( $file_name, $data ) {
 if ( DEBUG ) {
 file_put_contents( $file_name.'.txt' , $data );
 }
 }

}