php调用远程url的六种方法

示例代码1: 用file_get_contents 以get方式获取内容
    <?php

$url='http://www.baidu.com/';

$html = file_get_contents($url);
   //print_r($http_response_header);
   ec($html);
   printhr();

   printarr($http_response_header);

printhr();
   ?>
 
    示例代码2: 用fopen打开url, 以get方式获取内容
   <?

   $fp = fopen($url, 'r');
   
   printarr(stream_get_meta_da

ta($fp));

printhr();
   while(!feof($fp)) {
       $result .= fgets($fp, 1024);
}
echo "url body:    $result";
   printhr();

   fclose($fp);
   ?>

示例代码3：用file_get_contents函数,以post方式获取url

   <?php
   $data = array ('foo' => 'bar');
   $data = http_build_query($data);

   $opts = array (
'http' => array (
   'method' => 'POST',
    'header'=> "Content-type: application/x-www-form-urlencoded\r\n" .
     "Content-Length: " . strlen($data) . "\r\n",
   'content' => $data
   ),
   );

$context = stream_context_create($opts);
$html = file_get_contents('http://localhost/e/admin/test.html', false, $context);

echo $html;
?>

示例代码4：用fsockopen函数打开url，以get方式获取完整的数据，包括header和body
<?
function get_url ($url,$cookie=false) {
$url = parse_url($url);
$query = $url[path]."?".$url[query];
ec("Query:".$query);
$fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30);
if (!$fp) {
       return false;
} else {
       $request = "GET $query HTTP/1.1\r\n";
       $request .= "Host: $url[host]\r\n";
       $request .= "Connection: Close\r\n";
       if($cookie) $request.="Cookie:   $cookie\n";
       $request.="\r\n";
       fwrite($fp,$request);
       while(!@feof($fp)) {
         $result .= @fgets($fp, 1024);
       }
       fclose($fp);
       return $result;
}
}


//获取url的html部分，去掉header
function GetUrlHTML($url,$cookie=false) {

    $rowdata = get_url($url,$cookie);
    if($rowdata)
    {
        $body= stristr($rowdata,"\r\n\r\n");
        $body=substr($body,4,strlen($body));
        return $body;
    }
   
    return false;

}


?>

示例代码5：用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body
<?
function HTTP_Post($URL,$data,$cookie, $referrer="") {

// parsing the given URL
$URL_Info=parse_url($URL);

// Building referrer
if($referrer=="") // if not given use this script as referrer
$referrer="111";

// making string from $data
foreach($data as $key=>$value)
$values[]="$key=".urlencode($value);
$data_string=implode("&",$values);

// Find out which port is needed - if not given use standard (=80)
if(!isset($URL_Info["port"]))
$URL_Info["port"]=80;

// building POST-request:
$request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
$request.="Host: ".$URL_Info["host"]."\n";
$request.="Referer: $referer\n";
$request.="Content-type: application/x-www-form-urlencoded\n";
$request.="Content-length: ".strlen($data_string)."\n";
$request.="Connection: close\n";

$request.="Cookie:   $cookie\n";

$request.="\n";
$request.=$data_string."\n";

$fp = fsockopen($URL_Info["host"],$URL_Info["port"]);
fputs($fp, $request);
while(!feof($fp)) {
       $result .= fgets($fp, 1024);
}
fclose($fp);

return $result;
}
printhr();
?>
示例代码6:使用curl库，使用curl库之前，你可能需要查看一下php.ini，查看是否已经打开了curl扩展

<?
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, 'http://www.baidu.com/');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);

echo $file_contents;
?>
关于curl库：
curl官方网站http://curl.haxx.se/
curl 是使用URL语法的传送文件工具，支持FTP、FTPS、HTTP HTPPS SCP SFTP TFTP TELNET DICT FILE和LDAP。curl 支持SSL证书、HTTP POST、HTTP PUT 、FTP 上传，kerberos、基于HTT格式的上传、代理、cookie、用户＋口令证明、文件传送恢复、http代理通道和大量其他有用的技巧

<?
function printarr(array $arr)
{
    echo "<br> Row field count: ".count($arr)."<br>";
    foreach($arr as $key=>$value)
    {
       
            echo "$key=$value    <br>";
    }
}
?>