Detecting MIME of sending file

[orion_rus]

Hello world i need to know how i can find out is the sending file an image or not?
Thanks for helping me.

[dreamcatcher]

Couple of ways you could do this I think. Firstly, check the file against its mime type or check the file extension if you only want to allow certain files.

I usually check that the file extension is a .jpg, .png or .gif like this:

$filename = "picture.gif";

$extensions = array('.JPG', '.jpg', '.GIF', '.gif', '.png', '.PNG');

$ext = strrchr($filename, '.');

if (in_array($ext, $extensions))
{
//valid file type
}
else
{
//not valid
}

You can use other functions, but this one works ok for me. You can do the same with mime types. Store the allowable ones in an array, then check from there.

Hope that helps.

dc

[orion_rus]

Ok) thank you very much

[frizhard]

you can use function getimagesize() [us2.php.net]

it will return FALSE if your file is not a valid image