PHP Manual . ... PHP 4 ) read_exif_data -- Read the EXIF headers from a JPEG . array read_exif_data ( string filename) . The read_exif_data() function reads the EXIF headers from a JPEG image file. ... Exif headers tend to be present in JPEG images generated by digital cameras, but unfortunately each digital camera maker has a different idea of how to actually tag their images, so you can't always rely on a specific Exif header being present. Example 1. read_exif_data . ...