如何使用 curl 和 PHP 上传文件

问题描述

我想知道如何使用 cURL 或 PHP 中的任何其他方式上传文件.google了很多遍都没有结果.

I want to know how to upload file using cURL or anything else in PHP. I have searched in google many times but no results.

换句话说，用户在表单上看到一个文件上传按钮，该表单被发布到我的 php 脚本，然后我的 php 脚本需要将其重新发布到另一个脚本(例如在另一个服务器上).

In other words, the user sees a file upload button on a form, the form gets posted to my php script, then my php script needs to re-post it to another script (eg on another server).

我有这个代码来接收文件并上传它

I have this code to receive the file and upload it

代码:

echo"".$_FILES['userfile']."";
$uploaddir = './';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
if ( isset($_FILES["userfile"]) ) {
    echo '<p><font color="#00FF00" size="7">Uploaded</font></p>';
    if (move_uploaded_file
($_FILES["userfile"]["tmp_name"], $uploadfile))
echo $uploadfile;
    else echo '<p><font color="#FF0000" size="7">Failed</font></p>';
}

我希望代码将文件发送到接收文件.

I want the code to send the file to receiver file.

推荐答案

使用:

if (function_exists('curl_file_create')) { // php 5.5+
  $cFile = curl_file_create($file_name_with_full_path);
} else { // 
  $cFile = '@' . realpath($file_name_with_full_path);
}
$post = array('extra_info' => '123456','file_contents'=> $cFile);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$target_url);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$result=curl_exec ($ch);
curl_close ($ch);

也可以参考:

http://blog.derakkilgo.com/2009/06/07/send-a-file-via-post-with-curl-and-php/

PHP 5.5+ 的重要提示:

现在我们应该使用 https://wiki.php.net/rfc/curl-file-upload 但如果您仍想使用这种已弃用的方法，则需要设置 curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false);

Now we should use https://wiki.php.net/rfc/curl-file-upload but if you still want to use this deprecated approach then you need to set curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false);

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