PHP获取蓝奏云直链的源码案例
可以用来做api调用到网站做下载
演示地址：https://api.mlooc.cn/lanzou/
用法：
直接下载：https://api.mlooc.cn/lanzou/?url=https://www.lanzous.com/i1a18af&type=down
输出链接：https://api.mlooc.cn/lanzou/?url=https://www.lanzous.com/i1a18af

<?php
/**
 * @package Lanzou
 * @author Mlooc
 * @version 1.0.0
 * @link https://mlooc.cn
 */
    function MloocCurl($url,$method,$ifurl,$post_data){
        $UserAgent = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36';#设置ua
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_USERAGENT, $UserAgent);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        if ($method == "post") {
            curl_setopt($curl, CURLOPT_REFERER, $ifurl); 
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
        }
        $response = curl_exec($curl);
        curl_close($curl);
        return $response;
    }
    if (!empty($_GET['url'])) {
        $url = $_GET['url'];
        #第一步
        $ruleMatchDetailInList = "~ifr2\"\sname=\"[\s\S]*?\"\ssrc=\"\/(.*?)\"~";
        preg_match($ruleMatchDetailInList, MloocCurl($url,null,null,null),$link);
        $ifurl = "https://www.lanzous.com/".$link[1];
        #第二步
        $ruleMatchDetailInList = "~=\s'(.*?)';[\S\s]*?=\s'(.*?)'[\S\s]*?=\s'(.*?)'[\S\s]*?=\s'(.*?)'~";
        preg_match($ruleMatchDetailInList, MloocCurl($ifurl,null,null,null),$segment);
        #第三步
        #post提交的数据
        $post_data = array(
            "action" => $segment[1],
            "file_id" => $segment[2],
            "t" => $segment[3],
            "k" => $segment[4]
            );
        $obj = json_decode(MloocCurl("https://www.lanzous.com/ajaxm.php","post",$ifurl,$post_data));#json解析
        if ($obj->dom == "") {#判断链接是否正确
            echo "链接有误！";
        }else{
            $downUrl = $obj->dom."/file/".$obj->url;
            if (!empty($_GET['type'])) {
                $type = $_GET['type'];
                if ($type == "down") {
                    header('Location:'.$downUrl);#直接下载
                }else{
                    echo $obj->dom."/file/".$obj->url;#输出直链
                }
            }else{
                echo $obj->dom."/file/".$obj->url;#输出直链
            }
        }
    }else{
        $result_url = str_replace("index.php","","//".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']."?url=https://www.lanzous.com/i19zisb");
        echo "示列：";
        echo "<br/>";
        echo "直接下载："."<a href='".$result_url."&type=down' target='_blank'>".$result_url."&type=down</a>";
        echo "<br/>";
        echo "输出直链："."<a href='".$result_url."' target='_blank'>".$result_url."</a>";
    }
?>

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