PHP基于curl后台远程登录正方教务系统的方法

public function index(){
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $url); //填对于的URL就可以了
 curl_setopt($ch, CURLOPT_HEADER, 0);
 curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");
 curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file); //主要cookie的路径，本保存页面cookie
 curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); //返回结果自动输出
 $response = curl_exec($ch);
 curl_close($ch);
}

<img src="xxxx/CheckCode.aspx" />

public function getImg()
{
    $url = "http://xxxx/CheckCode.aspx";
    $filedir = SITE_PATH."/TMP/Cookies";
    $cookie_file = $filedir."/cookie.txt";
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file); //
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_TIMEOUT, "10");
    header("Content-type:image/gif"); //这个视不同图片格式不一样，请注意
    echo curl_exec($ch);
    curl_close($ch);
}