PHP发送HTTP请求的6种方法

发表:2018-01-04 11:05:52



方法1: 用 file_get_contents 以get方式获取内容:


<?php
                                                                                                                      
$url='https://wenda.shukaiming.com/';
                                                                                                                      
echo file_get_contents($url);
                                                                                                                      
?>


方法2: 用fopen打开url, 以get方式获取内容:

<?php
                                                                                                         
 //r标识read,即标识只读
                                                                                                         
 $fp = fopen($url, 'r');
                                                                                                         
 stream_get_meta_data($fp);
                                                                                                         
 while(!feof($fp)) {
                                                                                                         
 $body.= fgets($fp, 1024);
                                                                                                         
 }
                                                                                                         
 echo $body;
                                                                                                         
 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('https://wenda.shukaming.com', 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;
                                                                         
$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://wenda.shukaiming.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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