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：
- // 获取评论次数,参数是文章ID
- function getCommCount($postid)
- {
- $jsondata = file_get_contents("http://api.duoshuo.com/threads/counts.json?short_name=i94web&threads=$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'];
- }
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：
- <?php
- $url='http://www.ido321.com/';
- $html = file_get_contents($url);
- echo $html;
- ?>
2、用fopen打开url，用get方式获取
- $fp = fopen($url, 'r');
- stream_get_meta_data($fp);
- while(!feof($fp)) {
- $result .= fgets($fp, 1024);
- }
- echo "url body: $result";
- fclose($fp);
3、用file_get_contents 以post方式获取内容：
- $data = array ('foo' => 'bar');
- $data = http_build_query($data);
- $opts = array (
- 'http' => array (
- 'method' => 'POST',
- 'header'=> "Content-type: application/x-www-form-urlencodedrn" . 'Content-Length: ' . strlen($data) . 'rn', 'content' => $data ) ); $context = stream_context_create($opts); $html = file_get_contents('http://localhost/e/admin/test.html', false, $context); echo $html;
4、用fsockopen函数打开url，以get方式获取完整的数据，包括header和body,fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启
- function get_url ($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/1.1rn';
- $request .= 'Host: $url[host]rn';
- $request .= 'Connection: Closern';
- if($cookie) $request.='Cookie: $cookien';
- $request.='rn';
- fwrite($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,'rnrn');
- $body=substr($body,4,strlen($body));
- return $body;
- }
- return false;
- }
- function HTTP_Post($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/1.1n"; $request.="Host: ".$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;
- }
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
- $ch = curl_init();
- $timeout = 5;
- curl_setopt ($ch, CURLOPT_URL, ‘http://www.ido321.com/');
- curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
- curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
- $file_contents = curl_exec($ch);
- curl_close($ch);
- echo $file_contents;
来源：51CTO
