在Codeigniter中上传带有网址的图片 [英] Uploading image with url address in Codeigniter

问题描述

CodeIgniter上传库仅支持从PC上传图像文件。

CodeIgniter upload library only supports uploading image file from PC.

我正在尝试编写一个代码，使用户可以上传带有图像URL地址的图像。

I am trying to make a code that a user can upload image with image url address.

http://example.com/photo/jake2910.jpg

我只是将此图像地址发送到服务器并上传照片。

I simply send this image address to server and upload the photo.

做到这一点的方法？ （相信我，我已经尝试了几天的不同代码。）

Is there a way to do that? (trust me I tried different codes already for few days.)

推荐答案

CI的上传库完全没有必要。您只需使用以下代码即可下载文件：

There is no need in CI's upload library at all. You can simply download the file with this code:

$url = 'http://example.com/photo/jake2910.jpg';
/* Extract the filename */
$filename = substr($url, strrpos($url, '/') + 1);
/* Save file wherever you want */
file_put_contents('upload/'.$filename, file_get_contents($url));

但是请谨慎选择要保存的文件。请记住，即使图像也可能塞满易受攻击的代码。

But be very cautious about what files you are trying to save. Remember that even images can be stuffed with vulnerable code.

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