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<?php

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 * Description of CUrl
 *
 * @author Administrator
 */
class CUrl {

    private static $curl = null;
    private static $mcurl = null;



    public static function start() {
        self::$curl = curl_init();
        curl_setopt(self::$curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt(self::$curl, CURLOPT_HEADER, 0);
    }
    /**
     * 取得页面信息
     * @param type $url
     * @return type
     */
    public static function Info($url){
        self::start();
        curl_setopt(self::$curl, CURLOPT_URL, $url);
        $info = curl_getinfo(self::$curl);
        self::close();

        return $info;
    }
    /**
     * 下载图片
     * @param string $url
     * @param string $savepath
     */
    public static function Download($url,$savepath){
        $content = CUrl::Http($url);
        preg_match_all('/http:\/\/[^\?^\,]*?jpg/i', $content, $matches);
        list($jpgs) = $matches;
        $index = @$_GET['index'] ? @$_GET['index'] : 0;
        $count = count($jpgs);

        /*echo "<pre>";
        print_r($jpgs);
        echo "</pre>";
        die;*/

        $pic = CUrl::Http($jpgs[$index], null, $info);
        if(!in_array($info['http_code'],array('404','302')) && $pic) file_put_contents("{$savepath}/{$index}.jpg", $pic);
        $index++;
        if($index==($count-1)) exit('<br/>the End');
        exit('<meta http-equiv="refresh" content="0; url=' . urldecode("http://www.qweibo.com/test.php?index={$index}") . '"/>');

    }

    /**
     * 请求一个地址
     * @param string $url
     * @param array $post array("content" => "我是post值","upload" => "@F:/image/dsfdsf.rar"//要上传的本地文件地址)
     * @return  返回请求地址的页面内容
     */
    public static function Http($url, $post=null, &$info=array() , $timeout = null){
        self::start();
        curl_setopt(self::$curl, CURLOPT_URL, $url);

        if(!emptyempty($post)){//POST($_POST)和上传文件($_FILES)都可
            $options = array(
                CURLOPT_POST => 1,
                CURLOPT_POSTFIELDS => $post,
            );
            curl_setopt_array(self::$curl, $options);
        }
        if(!is_array($info)) {
            @$info = curl_getinfo(self::$curl);//取得请求信息 如果传了引用的话就不再是默认值array(),引用的值是为空的
        }
        if($timeout){
            //设置超时时间
            curl_setopt ( self::$curl, CURLOPT_TIMEOUT, $timeout );
        }
        $output = curl_exec(self::$curl);
        if($output === false) {
            return 'Curl error: ' . curl_error(self::$curl);//返回一个保护当前会话最近一次错误的字符串
        }

        self::close();

        return $output;
    }
    /**
     * 一次请求多个地址
     * @param array $urls 多个地址
     * @param array $posts 每个地址对应的POST数据 二维数组
     * @return 返回所有地址的内容
     */
    public static function MultiHttp($urls, $posts=null){
        self::$mcurl = curl_multi_init();

        foreach ($urls as $i => $url) {
              $conn[$i]=curl_init($url);
              if(!emptyempty($posts[$i])){//POST($_POST)和上传文件($_FILES)都可
                    $options = array(
                        CURLOPT_POST => 1,
                        CURLOPT_POSTFIELDS => $posts[$i],
                    );
                    curl_setopt_array($conn[$i], $options);
              }
              curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);
              curl_multi_add_handle (self::$mcurl,$conn[$i]);
        }

        do { $n=curl_multi_exec(self::$mcurl,$active); } while ($active);

        foreach ($urls as $i => $url) {
              $outputs[$i]=curl_multi_getcontent($conn[$i]);
              curl_close($conn[$i]);
        }

        return $outputs;
    }

    public function close(){
        curl_close(self::$curl);
    }
}

?>

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