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Error uploading .jpg files in Internet Explorer.

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I have an image uploading script, and to ensure that the file being uploaded is an image I have the following if statement.

if (($_FILES['imagefile']['type'] == "image/gif") OR ($_FILES['imagefile']['type'] == "image/jpg") OR ($_FILES['imagefile']['type'] == "image/jpeg") OR ($_FILES['imagefile']['type'] == "image/bmp") OR ($_FILES['imagefile']['type'] == "image/GIF") OR ($_FILES['imagefile']['type'] == "image/JPG") OR ($_FILES['imagefile']['type'] == "image/JPEG") OR ($_FILES['imagefile']['type'] == "image/BMP")){

(some code here)

}else echo("error: invalid filetype");

The script works fine when I try to upload images in Firefox, but when using IE I recieve the "error: invalid filetype" when I try to upload .jpg images.

Has anyone ever encountered this before? Or have any idea why this is happening?

Your help is much appreciated,

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I found the problem, ill post it here just incase anyone else runs into this.

While firefox reads the mime-type of a jpeg image as "image/jpeg", internet explorer reads it as "image/pjpeg"

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