PHP : binary image data, checking the image type

Question

I have some images in bin, I want to check the header to check the format (jpg, png, etc)

I don\'t want to use temp files! I have a solution using TEMP FILES.

Answer 1

http://php.net/manual/en/function.getimagesize.php

"Index 2 is one of the IMAGETYPE_XXX constants indicating the type of the image."