PHP获取网页内容的几种方法

方法1: 用file_get_contents以get方式获取内容
<?php $url = 'https://www.baidu.com/s?wd=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 = 'https://www.baidu.com/s?wd=123'; $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'=> $data ) ); // 如果需要再传递cookie数据,则把 // 'header'=>"Content-type: application/x-www-form-urlencoded\r\n"."Content-Length: ".strlen($data)."\r\n", // 修改为 // 'header'=>"Content-type: application/x-www-form-urlencoded\r\n"."Content-Length: ".strlen($data)."\r\n"."cookie:cookie1=c1;cookie2=c2\r\n"; // 即可 $ctx = stream_context_create($opts); $html = @file_get_contents($url,'',$ctx); echo $html; ?>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); $opts = array( 'http'=> array( 'method'=> 'POST', 'header'=>"Content-type: application/x-www-form-urlencoded\r\nCookie:cook1=c3;cook2=c4\r\n"."Content-Length: ".strlen($data) . "\r\n", 'content'=> $data ) ); $context= stream_context_create($opts); $html = fopen('https://www.baidu.com/s?wd=123','rb',false, $context); $w = fread($html,1024); echo $w; ?>方法5:用fsockopen函数打开url,以get方式获取完整的数据,包括header和body
<?php functionget_url ($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) { returnfalse; }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 $result; } } //获取url的html部分,去掉header functionGetUrlHTML($url,$cookie=false) { $rowdata= get_url($url,$cookie); if($rowdata) { $body = stristr($rowdata,"\r\n\r\n"); $body = substr($body,4,strlen($body)); return $body; } return false; } ?>方法6:用fsockopen函数打开url,以POST方式获取完整的数据,包括header和body
<?php functionHTTP_Post($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, 'https://www.baidu.com/s?wd=123'); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); ech o$file_contents; ?>
本文作者:青书's
文章标题: PHP获取网页内容的几种方法
本文地址:https://blog.i80k.com/jishu/16.html
版权声明:若无注明,本文皆为“青书's Blog”原创,转载请保留文章出处。
本文地址:https://blog.i80k.com/jishu/16.html
版权声明:若无注明,本文皆为“青书's Blog”原创,转载请保留文章出处。
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