总结PHP的6种GET和POST远程请求发送方法

1: 用file_get_contents 以get方式获取内容
复制代码 代码如下:

1、用file_get_contents 以get方式获取内容:

$url=”;
$html = file_get_contents($url);
//print_r($http_response_header);
ec($html);
printhr();
printarr($http_response_header);
printhr();
?>

 代码如下

示例代码2: 用fopen打开url, 以get方式获取内容
复制代码 代码如下:

<?php
$url=”;
$html = file_get_contents($url);
echo $html;
?>

$fp = fopen($url, ‘r’);
printarr(stream_get_meta_data($fp));
printhr();
while(!feof($fp)) {
$result .= fgets($fp, 1024);
}
echo “url body: $result”;
printhr();
fclose($fp);
?>

2、用fopen打开url,用get方式获取

示例代码3:用file_get_contents函数,以post方式获取url
复制代码 代码如下:

 代码如下

$data = array (‘foo’ => ‘bar’);
$data = http_build_query($data);
$opts = array (
‘http’ => array (
‘method’ => ‘POST’,
‘header’=> “Content-type: application/x-www-form-urlencoded” .
“Content-Length: ” . strlen($data) . “”,
‘content’ => $data
),
);
$context = stream_context_create($opts);
$html = file_get_contents(”, false,
$context);
echo $html;
?>

$fp = fopen($url, ‘r’);
stream_get_meta_data($fp);
while(!feof($fp)) {
$result .= fgets($fp, 1024);
}
echo “url body: $result”;
fclose($fp);

示例代码4:用fsockopen函数打开url,以get方式获取完整的数据,包括header和body
复制代码 代码如下:

3、用file_get_contents 以post方式获取内容:

function get_url ($url,$cookie=false) {
$url = parse_url($url);
$query = $url[path].”?”.$url[query];
ec(“Query:”.$query);
$fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno,
$errstr, 30);
if (!$fp) {
return false;
} else {
$request = “GET $query HTTP/1.1”;
$request .= “Host: $url[host]”;
$request .= “Connection: Close”;
if($cookie) $request.=”Cookie: $cookien”;
$request.=””;
fwrite($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,””);
$body=substr($body,4,strlen($body));
return $body;
}
return false;
}

 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(”, false,
$context);
 
echo $html;

示例代码5:用fsockopen函数打开url,以POST方式获取完整的数据,包括header和body
复制代码 代码如下:


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 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;
}
printhr();
?>

 代码如下

示例代码6:使用curl库,使用curl库之前,你可能需要查看一下php.ini,查看是否已经打开了curl扩展 复制代码 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;
}

$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ”);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
echo $file_contents;
?>

5、用fsockopen函数打开url,以POST方式获取完整的数据,包括header和body

关于curl库:
curl官方网站
curl 是使用URL语法的传送文件工具,支持FTP、FTPS、HTTP HTPPS SCP SFTP
TFTP TELNET DICT FILE和LDAP。curl 支持SSL证书、HTTP POST、HTTP PUT 、FTP
上传,kerberos、基于HTT格式的上传、代理、cookie、用户+口令证明、文件传送恢复、http代理通道和大量其他有用的技巧
复制代码 代码如下:

 代码如下

function printarr(array $arr)
{
echo “
Row field count: “.count($arr).”
“;
foreach($arr as $key=>$value)
{
echo “$key=$value
“;
}
}
?>

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;
}

  1. 有些主机服务商把php的allow_url_fopen选项是关闭了,就是没法直接使用file_get_contents来获取远程web页面的内容。那就是可以使用另外一个函数curl。
    下面是file_get_contents和curl两个函数同样功能的不同写法
    file_get_contents函数的使用示例:
    复制代码 代码如下:
    < ?php
    $file_contents = file_get_contents(”);
    echo $file_contents;
    ?>

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

换成curl函数的使用示例:
复制代码 代码如下:
< ?php
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ”);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
echo $file_contents;
?>

 代码如下

利用function_exists函数来判断php是否支持一个函数可以轻松写出下面函数
复制代码 代码如下:
< ?php
function vita_get_url_content($url) {
if(function_exists(‘file_get_contents’)) {
$file_contents = file_get_contents($url);
} else {
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
}
return $file_contents;
}
?>

$ch = curl_init();
$timeout = 5;
curl_setopt ($ch,
CURLOPT_URL, ‘’);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
 
echo $file_contents;

其实上面的这个函数还有待商榷,如果你的主机服务商把file_get_contents和curl都关闭了,上面的函数就会出现错误。

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