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：
- // 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 ;
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