如何使用curl

时间:2016-07-12 13:33:51

标签: php redirect curl

我使用php和curl来获取重定向url,我有输出,但它显示我在最后一次重定向时找不到错误302(我必须重定向两次url),这是我的php代码,< / p>

<?php 

     $url = 'http://www.example.com/kdjf/ksdjfk/file';
     function getred($url){
         $ch = curl_init($url);
         curl_exec($ch);
         if (!curl_errno($ch)) {
            $info = curl_getinfo($ch);
            return $info['redirect_url'];
         }
         curl_close($ch);
     }
     $dds=getred($url);
     echo getred($dds);
?>

$ dds在example.com通过后给了我下一个重定向,然后我再次使用了重定向功能,而且我有一个错误,

<html>
    <head>
        <title>302 Found</title>
    </head>
    <body bgcolor="white">
        <center><h1>302 Found</h1></center>
        <hr><center>nginx</center>
    </body>
</html>
http://www.example.org/skdfjk/new_file.html

如何只获得http://www.example.org/skdfjk/new_file.html而没有任何错误。或html标签。

2 个答案:

答案 0 :(得分:0)

我使用了两个函数来做这件事,它对我有用。

function getRedirectUrlss($url){ 
        $redirect_url = null;

        $url_parts = @parse_url($url);
        if (!$url_parts) return false;
        if (!isset($url_parts['host'])) return false; //can't process relative URLs
            if (!isset($url_parts['path'])) $url_parts['path'] = '/';

        $sock = fsockopen($url_parts['host'], (isset($url_parts['port']) ? (int)$url_parts['port'] : 80), $errno, $errstr, 30);
        if (!$sock) return false;

        $request = "HEAD " . $url_parts['path'] . (isset($url_parts['query']) ? '?'.$url_parts['query'] : '') . " HTTP/1.1\r\n";
        $request .= 'Host: ' . $url_parts['host'] . "\r\n";
        $request .= "Connection: Close\r\n\r\n";
        fwrite($sock, $request);
        $response = '';
        while(!feof($sock)) $response .= fread($sock, 8192);
        fclose($sock);

        if (preg_match('/^Location: (.+?)$/m', $response, $matches)){
            if ( substr($matches[1], 0, 1) == "/" )
                    return $url_parts['scheme'] . "://" . $url_parts['host'] . trim($matches[1]);
            else
                    return trim($matches[1]);

        } else {
                return false;
        }

                }

function getred($url){
$ch = curl_init($url);
curl_exec($ch);
if (!curl_errno($ch)) {
$info = curl_getinfo($ch);
 return $info['redirect_url'];
}
curl_close($ch);
}
$dds=getred($url); 
$urls= getRedirectUrlss($dds);
echo $urls;

答案 1 :(得分:0)

使用ob_clean(),ob_end_clean()和ob_get_clean()。在回显输出之前的功能