Restricting Non Image Files From File Upload Form?

[ShoeLace1291]

I have a file upload form on my site, but I want it so that the user can only select gif, jpg, etc.  How do I do this?

[papaface]

if ($_FILES['inputname']['type'] == "image/gif" || $_FILES['inputname']['type'] == "image/jpg")
{
//do something
}
else
{
//if not a gif or jpg
}

[AndyB]

I'd actually check the file to be sure some donkey hasn't renamed wombat.exe as wombat.gif

 

http://ca.php.net/manual/en/function.getimagesize.php will confirm it's really an image and which type.