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

Why not just check the file entension? :)

An Alternative

if(exif_imagetype($filepath) == IMAGETYPE_JPEG){
    echo 'This is a JPEG image';
}