php根据关键字搜索百度网盘资源下载

<?php
//返回
/*
'title'     => 资源名称
'downUrl'     => 资源下载链接
'fileSize'     => 资源大小
'format'     => 资源类型
'shareUser' => 共享用户
*/   
 
$url  = 'http://blog.jaekj.com/MyZR/baiduPanDown/baiduPan.php';
$postFields = array(
    's'         => '教程',        //关键字
    'searcher'     => 'baidu',        //百度网盘
    'page'         => 1,            //返回页数
    'rows'         => 100,            //返回总条数
);
 
//模拟提交要搜索的内容
$data  = curl_content($url, $postFields);
//截取json数据, 返回a到b区间的内容
$data  =  cut($data, '{"rows":', ',"total":');
//转换数组   
$data  = json_decode($data, true);
var_dump($data);
 
 
 
//截取指定区间内容
function cut($from, $start, $end, $lt = false, $gt = false)
{
    $str = explode($start, $from);
    if (isset($str['1']) && $str['1'] != '')
    {
        $str = explode($end, $str['1']);
        $strs = $str['0'];
    }
    else
    {
        $strs = '';
    }
 
    if ($lt)
        $strs = $start . $strs;
    if ($gt)
        $strs .= $end;
 
    return $strs;
}
 
 
/*
* 访问网址并取得其内容
* @param $url String 网址
* @param $postFields Array 将该数组中的内容用POST方式传递给网址中
* @param $cookie_file string cookie文件
* @param $r_or_w string 写cookie还是读cookie或是两都都有，r读，w写，a两者，null没有cookie
* @return String 返回网址内容
*/
function curl_content($url, $postFields = null, $cookie_file = null, $r_or_w = null)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);     // 模拟用户使用的浏览器 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);                         // 使用自动跳转  
    curl_setopt($ch, CURLOPT_AUTOREFERER, 1);                             // 自动设置Referer
    if ($cookie_file && ($r_or_w == 'a' || $r_or_w == 'w')) {   
        curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);                 // 存放Cookie信息的文件名称
    }   
    if ($cookie_file && ($r_or_w == 'a' || $r_or_w == 'r')) {   
        curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);             // 读取上面所储存的Cookie信息
    }   
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);                                 // 设置超时限制防止死循环
    curl_setopt($ch, CURLOPT_HEADER, 0);                                 // 显示返回的Header区域内容
    curl_setopt($ch, CURLOPT_FAILONERROR, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 
    if (is_array($postFields) && 0 < count($postFields))
    {
        $postBodyString = "";
        foreach ($postFields as $k => $v)
        {
            $postBodyString .= "$k=" . urlencode($v) . "&";
        }
        unset($k, $v);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, substr($postBodyString,0,-1));
    }
 
    $reponse = curl_exec($ch);
    if (curl_errno($ch)){
        throw new Exception(curl_error($ch),0);
    }
    else{
        $httpStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    }
    curl_close($ch);
    return $reponse;
}