PHP获取HTML网页内容的多种方法
王朝235网址导航 2021-09-29 64 ℃
方法1:用 file_get_contents 以get方式获取内容
<?php $url='http://www.domain.com/?para=123'; $html = file_get_contents($url); echo $html; ?>
方法2:用 file_get_contents 函数,以post方式获取url
<?php $url = 'http://www.domain.com/test.php?id=123'; $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 ) ); $ctx = stream_context_create($opts); $html = @file_get_contents($url,'',$ctx); ?>
如果需要再传递cookie数据,则把
'header'=> "Content-type: application/x-www-form-urlencoded " . "Content-Length: " . strlen($data) . " ",
修改为
'header'=> "Content-type: application/x-www-form-urlencoded " . "Content-Length: " . strlen($data) . " ". "cookie:cookie1=c1;cookie2=c2 " ;
即可。
方法3:用 fopen 打开url,以get方式获取内容
<?php $fp = fopen($url, 'r'); $header = stream_get_meta_data($fp);//获取报头信息 while(!feof($fp)) { $result .= fgets($fp, 1024); } echo "url header: {$header} <br>": echo "url body: $result"; fclose($fp); ?>
方法4:用 fopen 打开url,以post方式获取内容
<?php $data = array ('foo2' => 'bar2','foo3'=>'bar3'); $data = http_build_query($data); $opts = array ( 'http' => array ( 'method' => 'POST', 'header'=> "Content-type: application/x-www-form-urlencoded Cookie:cook1=c3;cook2=c4 " . "Content-Length: " . strlen($data) . " ", 'content' => $data ) ); $context = stream_context_create($opts); $html = fopen('http://www.test.com/zzzz.php?id=i3&id2=i4','rb' ,false, $context); $w=fread($html,1024); echo $w; ?>
方法5:用 fsockopen 函数打开url,以get方式获取完整的数据,包括header和body
<?php function get_url ($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 "; $request .= "Host: $url[host] "; $request .= "Connection: Close "; if($cookie) $request.="Cookie: $cookie "; $request.=" "; fwrite($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 $body; } return false; } ?>
方法6:用 fsockopen 函数打开url,以POST方式获取完整的数据,包括header和body
<?php function HTTP_Post($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 "; $request.="Host: ".$URL_Info["host"]." "; $request.="Referer: $referer "; $request.="Content-type: application/x-www-form-urlencoded "; $request.="Content-length: ".strlen($data_string)." "; $request.="Connection: close "; $request.="Cookie: $cookie "; $request.=" "; $request.=$data_string." "; $fp = fsockopen($URL_Info["host"],$URL_Info["port"]); fputs($fp, $request); while(!feof($fp)) { $result .= fgets($fp, 1024); } fclose($fp); return $result; } ?>
方法7: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; ?>
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