PHP如何获取网页内容

分类:PHP | 作者:凹凸曼 | 发表于2011/05/04

方法1: 用file_get_contents 以get方式获取内容
<?php
$url=’http://www.domain.com/’;
$html = file_get_contents($url);
echo $html;
?>

方法2: 用fopen打开url, 以get方式获取内容
<?php
$fp = fopen($url, ‘r’);
stream_get_meta_data($fp);
while(!feof($fp)) {
$result .= fgets($fp, 1024);
}
echo “url body: $result”;
fclose($fp);
?>

方法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;
?>

方法4:用fsockopen函数打开url,以get方式获取完整的数据,包括header和body
<?php
function get_url ($url,$cookie=false)
{
$url = parse_url($url);
$query = $url[path].”?”.$url[query];
echo “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;
}
?>

方法5:用fsockopen函数打开url,以POST方式获取完整的数据,包括header和body
<?php
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;
}

?>

方法6:使用curl库,使用curl库之前,可能需要查看一下php.ini是否已经打开了curl扩展
<?php
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ‘http://www.domain.com/’);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);

echo $file_contents;
?>

参考文章:http://jar-c.blog.163.com/blog/static/1164012502010223103749318/

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该日志于2011-05-04 07:49由 凹凸曼 发表在PHP分类下, 你可以发表评论。除了可以将这个日志以保留源地址及作者的情况下引用到你的网站或博客,还可以通过RSS 2.0订阅这个日志的所有评论。

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