【php基础知识总结】总结PHP的6种GET和POST远程请求发送方法

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1、用file_get_contents 以get方式获取内容：

 代码如下
$url="http://www.ido321.com/";
$html = file_get_contents($url);
echo $html;
?>

2、用fopen打开url，用get方式获取

 代码如下
$fp = fopen($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：

 代码如下
$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

 代码如下
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

 代码如下
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

 代码如下
$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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