Question

php中有哪些常用的远程请求发送方法

Answer 1

1、用file_get_contents 以get方式获取内容：
<?php
$url = 'http://www.maiziedu.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://www.maiziedu.com' , 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' ;

// 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.maiziedu.com/');
curl_setopt ( $ch , CURLOPT_RETURNTRANSFER, 1);
curl_setopt ( $ch , CURLOPT_CONNECTTIMEOUT, $timeout );
$file_contents = curl_exec( $ch );
curl_close( $ch );
echo $file_contents ;

以上就是php中，比较常用的6中远程请求方法，希望对php新人的学习、工作有一定的帮助。当然远程请求的方法肯定不止题主上面为大家介绍的这6中，如果你还有更好的方法，欢迎补充分享。软件开发的学习，就是一个分享式的学习，让我们一起在分享学习中，共进步。