How to get the image type in php [duplicate]

Answer 1

use getimagesize() or exif_imagetype()

// integer - for example: IMAGETYPE_GIF, IMAGETYPE_JPEG etc.
$type   = exif_imagetype($_FILES['image']['tmp_name']);

and

$info   = getimagesize($_FILES['image']['tmp_name']);
$mime   = $info['mime']; // mime-type as string for ex. "image/jpeg" etc.
$width  = $info[0];      // width as integer for ex. 512
$height = $info[1];      // height as integer for ex. 384
$type   = $info[2];      // same as exif_imagetype

Mind that exif_imagetype is much faster than getimagesize. Check documentation for more info.