2013-02-13 116 views
0

我正在编写一个URL刮板(只是名称和说明),并试图处理301重定向。PHP Array搜索返回值时返回false数组

现在,我检查标题,如果不是200,我尝试在标题中找到要重定向到的位置。我的问题出现了,因为尽管我在那里看到它,但array_search不返回位置值所在的键。

这是代码片段:

if(strpos($url_headers[0], "200") !== false){ 
     echo "in here"; 
     return $url; 
    }else{ 
     print_r($url_headers); 
     //look for location 
     $location_key = array_search("Location: ", $url_headers); 
     echo "Location Key: " . $location_key; 
     $redirect_string = $url_headers[$location_key]; 
     $clean_url = str_replace("Location: ", "", $redirect_string); 
     return $clean_url; 
    } 

的这个输出是:

Array ([0] => HTTP/1.0 301 Moved Permanently [1] => Location: http://www.google.com/ [2] => Content-Type: text/html; charset=UTF-8 [3] => Date: Wed, 13 Feb 2013 03:30:00 GMT [4] => Expires: Fri, 15 Mar 2013 03:30:00 GMT [5] => Cache-Control: public, max-age=2592000 [6] => Server: gws [7] => Content-Length: 219 [8] => X-XSS-Protection: 1; mode=block [9] => X-Frame-Options: SAMEORIGIN [10] => HTTP/1.0 200 OK [11] => Date: Wed, 13 Feb 2013 03:30:00 GMT [12] => Expires: -1 [13] => Cache-Control: private, max-age=0 [14] => Content-Type: text/html; charset=ISO-8859-1 [15] => Set-Cookie: PREF=ID=fe86e29432d4e240:FF=0:TM=1360726200:LM=1360726200:S=Wg8VEU7kc7UtcKc-; expires=Fri, 13-Feb-2015 03:30:00 GMT; path=/; domain=.google.com [16] => Set-Cookie: NID=67=KH8Zu8EpKjrhje8nD0lk_868mqvQr9pGwsAsaUuPDD_PRUgohJHoOkdlyYEHWmohUtndyENDJ0oZq8pC1aqOg20anXpUn5btQX5GYM6kYlgMhYxIPajtGp9KymmMDO1Y; expires=Thu, 15-Aug-2013 03:30:00 GMT; path=/; domain=.google.com; HttpOnly [17] => P3P: CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info." [18] => Server: gws [19] => X-XSS-Protection: 1; mode=block [20] => X-Frame-Options: SAMEORIGIN) Location Key: {"error":"invalid_url","error_code":null} 

我在做什么错?在抓取用户提供的链接时有没有更好的方式来处理重定向?

+2

不会我有一个自动的重定向头解析机制? – 2013-02-13 03:36:22

+0

尝试实施卷曲,如果存在自动重定向机制,则不会启动:请参阅http://tryecruit.com/app/app.php?action=new&object=resource&url=google.com – 2013-02-13 03:56:27

回答

0
$url_headers[0] = 'HTTP/1.0 200'; 
if(strpos($url_headers[0], "200") > 0){ 
    echo "here"; 
} else { 
    //look for location 
    $location_key = getLocation($url_headers); 
    echo "Location Key: " . $location_key; 
} 

function getLocation($data) { 
    $url = false; 
    foreach($data as $key => $value) { 
     if (preg_match("/Location:/", $value)) { 
      echo "A match was found."; 
      //$url = $matches[1]; 
      $url = $data[$key]; 
      break; 
     } 
    } 
    return $url; 
} 
+0

数组密钥包含“位置:“从网站更改为网站,这是我第一次尝试,然后我继续尝试使用数组搜索来捕获适当的值,无论它在哪里。 – 2013-02-13 05:03:54

+0

现在尝试为您更新,它将解决您的http和https问题 – Shridhar 2013-02-13 06:57:38

0

strpos返回false如果它,所以你需要做的

if(! strpos($url_headers[0], "200")) 
+0

问题是,array_search实际上没有找到“位置:”的关键位置,尽管事实上在前几行中,它被证明具有该位置值 – 2013-02-13 05:03:06

0
 $ch = curl_init(); 
     curl_setopt($ch, CURLOPT_URL, $url); 
     curl_setopt($ch, CURLOPT_HEADER, true); 
     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false); 
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
     $a = curl_exec($ch); 
     if(preg_match('#Location: (.*)#', $a, $r)){ 
     $l = trim($r[1]); 
     return $l; 
     }else{ 
      return $url; 
     } 

这适用于大多数情况,但仍然有问题重定向到https(他们需要一个没有找到匹配由于某种原因双重定向?)

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