PHP：6种GET和POST请求发送方法_PHP教程-PHP-Tutorial-php.cn

PHP：6种GET和POST请求发送方法

在i94web博客中，我试过了畅言和多说两种社会化评论框，后来还是抛弃了畅言，不安全。

无论是畅言还是多说，我都需要从远程抓取文章的评论数，然后存入本地数据库。对于多说，请求的格式如下：

<ol class="dp-c"><li class="alt"><span class="comment">// 获取评论次数,参数是文章ID </li><li>function getCommCount($postid) </li><li class="alt">{ </li><li> $jsondata = file_get_contents("http://api.duoshuo.com/threads/counts.json?short_name=i94web&threads=$postid"); // 设置true返回数组,不设置或者是false则返回对象 $resjson= json_decode($jsondata,true); return $resjson['response'][$postid]['comments']; </li><li class="alt">} </li></ol>

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对于远程请求，有很多种方法。今天，LZ就搜罗了六种，供大家参考。

1、用file_get_contents 以get方式获取内容：

<ol class="dp-c"><li class="alt"><?php </li><li><span class="vars">$url=<span class="string">'http://www.ido321.com/'; </li><li class="alt"><span class="vars">$html = <span class="func">file_get_contents(<span class="vars">$url); </li><li><span class="func">echo <span class="vars">$html; </li><li class="alt">?> </li></ol>

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2、用fopen打开url，用get方式获取

<ol class="dp-c"><li class="alt"><span class="vars">$fp = <span class="func">fopen(<span class="vars">$url, <span class="string">'r'); </li><li>stream_get_meta_data(<span class="vars">$fp); </li><li class="alt"><span class="keyword">while(!<span class="func">feof(<span class="vars">$fp)) { </li><li><span class="vars">$result .= <span class="func">fgets(<span class="vars">$fp, 1024); </li><li class="alt">} </li><li><span class="func">echo <span class="string">"url body: $result"; </li><li class="alt">fclose(<span class="vars">$fp); </li></ol>

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3、用file_get_contents 以post方式获取内容：

<ol class="dp-j"><li class="alt">$data = array (<span class="string">'foo' => <span class="string">'bar'); </li><li>$data = http_build_query($data); </li><li class="alt">$opts = array ( </li><li><span class="string">'http' => array ( </li><li class="alt"><span class="string">'method' => <span class="string">'POST', </li><li><span class="string">'header'=> <span class="string">"Content-type: application/x-www-form-urlencodedrn" . <span class="string">'Content-Length: ' . strlen($data) . <span class="string">'rn', <span class="string">'content' => $data ) ); $context = stream_context_create($opts); $html = file_get_contents(<span class="string">'http://localhost/e/admin/test.html', <span class="keyword">false, $context); echo $html; </li></ol>

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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

<ol class="dp-c"><li class="alt"><span class="keyword">function get_url (<span class="vars">$url,<span class="vars">$cookie=false) </li><li>{ </li><li class="alt"><span class="vars">$url = <span class="func">parse_url(<span class="vars">$url); </li><li><span class="vars">$query = <span class="vars">$url[path].<span class="string">'?'.<span class="vars">$url[query]; </li><li class="alt"><span class="func">echo <span class="string">'Query:'.<span class="vars">$query; </li><li><span class="vars">$fp = <span class="func">fsockopen( <span class="vars">$url[host], <span class="vars">$url[port]?<span class="vars">$url[port]:80 , <span class="vars">$errno, <span class="vars">$errstr, 30); </li><li class="alt"><span class="keyword">if (!<span class="vars">$fp) { </li><li><span class="keyword">return false; </li><li class="alt">} <span class="keyword">else { </li><li><span class="vars">$request = <span class="string">'GET $query HTTP/1.1rn'; </li><li class="alt"><span class="vars">$request .= <span class="string">'Host: $url[host]rn'; </li><li><span class="vars">$request .= <span class="string">'Connection: Closern'; </li><li class="alt"><span class="keyword">if(<span class="vars">$cookie) <span class="vars">$request.=<span class="string">'Cookie: $cookien'; </li><li><span class="vars">$request.=<span class="string">'rn'; </li><li class="alt">fwrite(<span class="vars">$fp,<span class="vars">$request); </li><li><span class="keyword">while(!@<span class="func">feof(<span class="vars">$fp)) { </li><li class="alt"><span class="vars">$result .= @<span class="func">fgets(<span class="vars">$fp, 1024); </li><li>} </li><li class="alt">fclose(<span class="vars">$fp); </li><li><span class="keyword">return <span class="vars">$result; </li><li class="alt">} </li><li>} </li><li class="alt"><span class="comment">//获取url的html部分，去掉header </li><li>function GetUrlHTML($url,$cookie=false) </li><li class="alt">{ </li><li>$rowdata = get_url($url,$cookie); </li><li class="alt">if($rowdata) </li><li>{ </li><li class="alt">$body= stristr($rowdata,'rnrn'); </li><li>$body=substr($body,4,strlen($body)); </li><li class="alt">return $body; </li><li>} </li><li class="alt"> </li><li>return false; </li><li class="alt">} </li></ol>

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5、用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body

<ol class="dp-c"><li class="alt"><span class="keyword">function HTTP_Post(<span class="vars">$URL,<span class="vars">$data,<span class="vars">$cookie, <span class="vars">$referrer=<span class="string">'') </li><li>{ </li><li class="alt"><span class="comment">// parsing the given URL </li><li>$URL_Info=parse_url($URL); </li><li class="alt"> </li><li>// Building referrer </li><li class="alt">if($referrer=='') // if not given use this script as referrer </li><li>$referrer='111'; </li><li class="alt"> </li><li>// making string from $data </li><li class="alt">foreach($data as $key=>$value) </li><li>$values[]='$key='.urlencode($value); </li><li class="alt">$data_string=implode('&',$values); </li><li> </li><li class="alt">// Find out which port is needed – if not given use standard (=80) </li><li>if(!isset($URL_Info['port'])) </li><li class="alt">$URL_Info['port']=80; </li><li> </li><li class="alt">// building POST-request: </li><li>$request.="POST ".$URL_Info['path']." HTTP/1.1n"; $request.="Host: ".$URL_Info['host']."n"; $request.="Referer: $referern"; $request.="Content-type: application/x-www-form-urlencodedn"; $request.='Content-length: '.strlen($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; </li><li class="alt">} </li></ol>

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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

<ol class="dp-c"><li class="alt"><span class="vars">$ch = curl_init(); </li><li><span class="vars">$timeout = 5; </li><li class="alt">curl_setopt (<span class="vars">$ch, CURLOPT_URL, ‘http:<span class="comment">//www.ido321.com/'); </li><li>curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); </li><li class="alt">curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); </li><li>$file_contents = curl_exec($ch); </li><li class="alt">curl_close($ch); </li><li>echo $file_contents; </li></ol>

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