php擷取遠程網頁源碼的程式碼

php的curl函數

基本例子

代碼如下	複製代碼
??php // 初始化一個 cURL 對象 $curl = curl_init(); // 設定你需要抓取的URL curl_setopt($curl, CURLOPT_URL, 'http://www.111cn.net'); // 設定header curl_setopt($curl, CURLOPT_HEADER, 1); // 設定cURL 參數，要求結果儲存到字串中還是輸出到螢幕上。 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 運行cURL，請求網頁 $data = curl_exec($curl); // 關閉URL請求 curl_close($curl); // 顯示獲得的資料 var_dump($data); ?>

php fopen函數

代碼如下

複製代碼

<? print("<H1>HTTP</H1>n"); // open a file using http protocol if(!($myFile = fopen("http://www.111cn.net/", "r"))) { print("file could not be opened"); exit; } while(!feof($myFile)) { // read a line from the file $myLine = fgetss($myFile, 255); print("$myLine <BR>n"); } // close the file fclose($myFile); print("<H1>FTP</H1>n"); print("<HR>n"); // open a file using ftp protocol if(!($myFile = fopen("ftp://ftp.php.net/welcome.msg", "r"))) { print("file could not be opened"); exit; } while(!feof($myFile)) { // read a line from the file $myLine = fgetss($myFile, 255); print("$myLine <BR>n"); } // close the file fclose($myFile); print("<H1>Local</H1>n"); print("<HR>n"); // open a local file if(!($myFile = fopen("data.txt", "r"))) { print("file could not be opened"); exit; } while(!feof($myFile)) { // read a line from the file $myLine = fgetss($myFile, 255); print("$myLine <BR>n"); } // close the file fclose($myFile); ?>

file_get_contents函數

代碼如下	複製代碼
?php file_get_contents('http://www.111cn.net/'); ?>

抓取遠程網頁源碼類

代碼如下

複製代碼

<?php   class HTTPRequest {     var $_fp;        // HTTP socket     var $_url;        // full URL     var $_host;        // HTTP host     var $_protocol;    // protocol (HTTP/HTTPS)     var $_uri;        // request URI     var $_port;        // port          // scan url     function _scan_url()     {         $req = $this->_url;                  $pos = strpos($req, '://');         $this->_protocol = strtolower(substr($req, 0, $pos));                  $req = substr($req, $pos+3);         $pos = strpos($req, '/');         if($pos === false)             $pos = strlen($req);         $host = substr($req, 0, $pos);                  if(strpos($host, ':') !== false)         {             list($this->_host, $this->_port) = explode(':', $host);         }         else          {             $this->_host = $host;             $this->_port = ($this->_protocol == 'https') ? 443 : 80;         }                  $this->_uri = substr($req, $pos);         if($this->_uri == '')             $this->_uri = '/';     }          // constructor     function HTTPRequest($url)     {         $this->_url = $url;         $this->_scan_url();     }          // download URL to string     function DownloadToString()     {         $crlf = "rn";                  // generate request         $req = 'GET ' . $this->_uri . ' HTTP/1.0' . $crlf             .    'Host: ' . $this->_host . $crlf             .    $crlf;                  // fetch         $this->_fp = fsockopen(($this->_protocol == 'https' ? 'ssl://' : '') . $this->_host, $this->_port);         fwrite($this->_fp, $req);         while(is_resource($this->_fp) && $this->_fp && !feof($this->_fp))             $response .= fread($this->_fp, 1024);         fclose($this->_fp);                  // split header and body         $pos = strpos($response, $crlf . $crlf);         if($pos === false)             return($response);         $header = substr($response, 0, $pos);         $body = substr($response, $pos + 2 * strlen($crlf));                  // parse headers         $headers = array();         $lines = explode($crlf, $header);         foreach($lines as $line)             if(($pos = strpos($line, ':')) !== false)                 $headers[strtolower(trim(substr($line, 0, $pos)))] = trim(substr($line, $pos+1));                  // redirection?         if(isset($headers['location']))         {             $http = new HTTPRequest($headers['location']);             return($http->DownloadToString($http));         }         else          {             return($body);         }     } } //使用方法 $r = new HTTPRequest('http://www.111cn.net'); $str=$r->DownloadToString();   ?>