如何在上传时检索图像的文件扩展名?
上传时没有任何问题,只需检索文件扩展名,这在动态创建缩略图时非常有用。
由于
答案 0 :(得分:5)
http://codeigniter.com/user_guide/libraries/file_uploading.html
$this->upload->data()
这是一个辅助函数,它返回一个数组,其中包含与您上传的文件相关的所有数据。这是数组原型:
Array
(
[file_name] => mypic.jpg
[file_type] => image/jpeg
[file_path] => /path/to/your/upload/
[full_path] => /path/to/your/upload/jpg.jpg
[raw_name] => mypic
[orig_name] => mypic.jpg
[client_name] => mypic.jpg
[file_ext] => .jpg
[file_size] => 22.2
[is_image] => 1
[image_width] => 800
[image_height] => 600
[image_type] => jpeg
[image_size_str] => width="800" height="200"
)
因此,在用户上传了某些内容后,您可能希望将文件扩展名存储在数据库中,并附上有关该图像的其他详细信息: - )
答案 1 :(得分:4)
$name_of_file_with_extn = $this->upload->data('file_name')
您可以从下面的列表中更改项目名称
file_name Name of the file that was uploaded, including the filename extension
file_type File MIME type identifier
file_path Absolute server path to the file
full_path Absolute server path, including the file name
raw_name File name, without the extension
orig_name Original file name. This is only useful if you use the encrypted name option.
client_name File name as supplied by the client user agent, prior to any file name preparation or incrementing
file_ext Filename extension, period included
file_size File size in kilobytes
is_image Whether the file is an image or not. 1 = image. 0 = not.
image_width Image width
image_height Image height
image_type Image type (usually the file name extension without the period)
image_size_str A string containing the width and height (useful to put into an image tag)
这可能会对你有帮助。
答案 2 :(得分:-1)
上传文件后,您可以通过以下方式获取其财产:
$saved_file_name = $this->upload->data('file_name');
// will give you the filename along with the extension
如果您想在上传之前只获取文件扩展名,请使用核心PHP:
$file_ext = pathinfo($_FILES["file"]["name"], PATHINFO_EXTENSION);
或使其干净
$filename= $_FILES["file"]["name"];
$file_ext = pathinfo($filename,PATHINFO_EXTENSION);