PHP下打开URL地址的几种方法小结

网学网PHP编辑为广大网友搜集整理了：PHP下打开URL地址的几种方法小结绩等信息，祝愿广大网友取得需要的信息，参考学习。

1: 用file_get_contents 以get方式获取内容
复制代码 代码如下:
<?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
复制代码 代码如下:
<?
$fp = fopen($url, ''r'');
printarr(stream_get_meta_data($fp));
printhr();
while(!feof($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
复制代码 代码如下:
<?php
$data = array (''foo'' => ''bar'');
$data = http_build_query($data);
$opts = array (
''http'' => array (
''method'' => ''POST'',
''header''=> "Content-type: application/x-www-form-urlencoded" .
"Content-Length: " . strlen($data) . "",
''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
复制代码 代码如下:
<?
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";
$request .= "Host: $url[host]";
$request .= "Connection: Close";
if($cookie) $request.="Cookie: $cookie\n";
$request.="";
fwrite($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,"");
$body=substr($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
复制代码 代码如下:
<?
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
复制代码