php发送get、post请求的6种方法简明总结

前端技术 2023/09/06 PHP

方法1: 用file_get_contents 以get方式获取内容：

<?php
$url=\'http://www.phpstudy.net/\';
$html = file_get_contents($url);
echo $html;
?>

方法2: 用fopen打开url, 以get方式获取内容：

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

方法3：用file_get_contents函数,以post方式获取url

<?php
$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;
?>

方法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

<?php
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;
}
?>

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

<?php
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;
}

?>

方法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

<?php
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ‘http://www.phpstudy.net/\');
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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