PHP发送HTTP请求的6种方法，知道4种算你牛

方法1: 用 file_get_contents 以get方式获取内容：

	
	

		
		

			php
		

	

	

		
		

			$url='https://wenda.shukaiming.com/';
		

	

	

		
		

			echo file_get_contents($url);
		

	

	

		
		

			?>
		

	

方法2: 用fopen打开url, 以get方式获取内容：

	
	

		
		

			php
		

	

	

		
		

			//r标识read，即标识只读
		

	

	

		
		

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

	

	

		
		

			stream_get_meta_data($fp);
		

	

	

		
		

			while(!feof($fp)) {
		

	

	

		
		

			$body.= fgets($fp, 1024);
		

	

	

		
		

			}
		

	

	

		
		

			echo $body;
		

	

	

		
		

			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'=> 'Contenttype: application/xwwwformurlencodedrn' .
		

	

	

		
		

			'ContentLength: ' . strlen($data) . '\r\n',
		

	

	

		
		

			'content' => $data
		

	

	

		
		

			)
		

	

	

		
		

			);
		

	

	

		
		

			


		

	

	

		
		

			$context = stream_context_create($opts);
		

	

	

		
		

			$html = file_get_contents('https://wenda.shukaming.com', 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,fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启

	
	

		
		

			php
		

	

	

		
		

			function get_url ($url,$COOKIE=false)
		

	

	

		
		

			{
		

	

	

		
		

			$url = parse_url($url);
		

	

	

		
		

			$query = $url[path].”?”.$url[query];
		

	

	

		
		

			echo $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:  $COOKIEn";
		

	

	

		
		

			$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 POSTrequest:
		

	

	

		
		

			$request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
		

	

	

		
		

			$request.="Host: ".$URL_Info["host"]."\n";
		

	

	

		
		

			$request.="Referer: $referer\n";
		

	

	

		
		

			$request.="Contenttype: application/xwwwformurlencodedn";
		

	

	

		
		

			$request.="Contentlength: ".strlen($data_string)."\n";
		

	

	

		
		

			$request.="Connection: closen";
		

	

	

		
		

			


		

	

	

		
		

			$request.="COOKIE:  $COOKIEn";
		

	

	

		
		

			


		

	

	

		
		

			$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://wenda.shukaiming.com');
		

	

	

		
		

			curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
		

	

	

		
		

			curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
		

	

	

		
		

			$file_contents = curl_exec($ch);
		

	

	

		
		

			curl_close($ch);
		

	

	

		
		

			


		

	

	

		
		

			echo $file_contents;
		

	

	

		
		

			?>