php 调用远程url的六种方法小结(修正版）

最新推荐文章于 2025-11-24 11:38:41 发布

转载最新推荐文章于 2025-11-24 11:38:41 发布 · 1.5k 阅读

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原文链接：https://my.oschina.net/u/2364788/blog/2878159

文章标签：

#php #python

本文深入探讨了使用PHP进行网络请求的多种方法，包括利用file_get_contents、fopen、fsockopen及curl库发送GET和POST请求的具体实现。通过示例代码展示了如何获取URL内容、处理响应头和正文，为开发者提供了实用的网络编程指南。

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示例代码1: 用file_get_contents 以get方式获取内容

<?php 
$url='http://www.baidu.com/'; 
$html=file_get_contents($url); 
//print_r($http_response_header); 
echo($html); 
echo("<hr>");
print_r($http_response_header);

示例代码2: 用fopen打开url, 以get方式获取内容

<? 
$url='http://www.baidu.com/';

$fp=fopen($url,'r');
print_r(stream_get_meta_data($fp));
echo "<hr>";
while(!feof($fp)){
    $result.=fgets($fp,1024);
}
echo"url body: $result";
echo "<hr>";
fclose($fp);

示例代码3：用file_get_contents函数,以post方式获取url

<?php 
$data = array('foo' => 'bar');
$data = http_build_query($data);

$opts = array(
    'http' => array(
        'method' => 'POST',
        'header' => "Content-type: application/x-www-form-urlencoded\r\n" .
            "Content-Length: " . strlen($data) . "\r\n",
        'content' => $data
    ),
);
$context = stream_context_create($opts);
$html = file_get_contents('http://localhost/test1.php', false, $context);
echo $html;

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

<?php

$url='http://localhost/test1.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 {
        $request = "GET{$queryHTTP}/1.1\r\n";
        $request .= "Host:$url[host]\r\n";
        $request .= "Connection: Close\r\n";
        if ($cookie) $request .= "Cookie: $cookie\n";
        $request .= "\r\n";
        fwrite($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, "\r\n\r\n");
        $body = substr($body, 4, strlen($body));
        return $body;
    }
    return false;
}

print_r(GetUrlHTML($url));

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

<? 

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/1.1\n";
    $request .= "Host: " . $URL_Info["host"] . "\n";
    $request .= "Referer:$referer\n";
    $request .= "Content-type: application/x-www-form-urlencoded\n";
    $request .= "Content-length: " . strlen($data_string) . "\n";
    $request .= "Connection: close\n";
    $request .= "Cookie: $cookie\n";
    $request .= "\n";
    $request .= $data_string . "\n";

    $fp = fsockopen($URL_Info["host"], $URL_Info["port"]);
    fputs($fp, $request);

    $result = '';
    while (!feof($fp)) {
        $result .= fgets($fp, 1024);
    }
    fclose($fp);
    
    return $result;
}

echo "<hr>";

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

<? 
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, 'http://www.baidu.com/');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
echo $file_contents;

转载于:https://my.oschina.net/u/2364788/blog/2878159