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在 php 中通过 CURL 上传文件

jacklove

jacklove

发布时间：2018-06-11 23:42:16

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6445人浏览过

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来源于php中文网

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1、使用 CURL 默认的方法
$file = realpath('gif/1.gif'); //要上传的文件
$fields['f'] = '@'.$file;
$ch = curl_init();  
curl_setopt($ch, CURLOPT_URL,"http://localhost/ajax_server.php?id=1");  
curl_setopt($ch, CURLOPT_POST, 1 );
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_exec ($ch);  
curl_close ($ch);

2、另类的做法，有时我们需要将动态产生的内容当做文件上传到远程服务器，却又不想在本地服务器中构建临时文件。这样就有了这个另类的写法
$contents =<<< 'TEXT'
数据报中应该是
Content-Disposition: form-data; name="userfile"; filename="file_name"
Content-Type: 文档类型
文件内容
这样的格式，我只实现了文件名部分，文档类型不知道如何实现。
这样上传后就取不到 type 的值
curl_upload_server.php

<?php
print_r($_FILES);
echo "文件内容:\n";
$p = current($_FILES);
readfile($p['tmp_name']);
TEXT;
$fields['f"; filename="x.x'] = $contents; //这个关联键的写法很怪异吧？
$ch = curl_init();  
curl_setopt($ch, CURLOPT_URL,"http://localhost/curl_upload_server.php");  
curl_setopt($ch, CURLOPT_POST, 1 );
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$s = curl_exec ($ch);  
curl_close ($ch);  
echo $s;</pre><pre class="brush:php;toolbar:false">$contents =<<< 'TEXT'
上传文件在数据报中应该是
Content-Disposition: form-data; name="userfile"; filename="file_name"
Content-Type: 文档类型
文件内容
这样的格式
以下是服务器端代码
curl_upload_server.php
<xmp>
<?php
print_r($_FILES); //检查上传信息
echo "文件内容:\n";
$p = current($_FILES);
readfile($p['tmp_name']);  //输出上传的文件
TEXT;
$varname = 'my';
$name = '3.txt';
$type = 'text/plain';
$key = "$varname\"; filename=\"$name\r\nContent-Type: $type\r\n";
$fields[$key] = $contents;
$ch = curl_init();  
curl_setopt($ch, CURLOPT_URL,"http://localhost/curl_upload_server.php");  
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST" );
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$s = curl_exec ($ch);  
curl_close ($ch);  
echo $s;</pre><p style="text-align: left;">本文讲解了在 <a style="color:#f60; text-decoration:underline;" title="php" href="https://www.php.cn/zt/15714.html" target="_blank">php</a> 中通过 CURL 上传文件相关内容请关注php中文网。</p>
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