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| 关键词： url request data cookie contents curl get fp http body |
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： [代码]php代码：// 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：
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;
}
5、 用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body
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' ;
// ** 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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