Why doesn't this code work?

[Abdul Abdul <abdul.sw84@xxxxxxxxx>]

Hello,

I have the following PHP script, where I'm trying to retrieve the image
type. Why doesn't it work? What am I doing wrong?

<?php
$image="4.2.06"
$imagetype = exif_imagetype($image);
echo "Image type is: " $imagetype;
?>

Thanks.