php - Check if the image is a JPEG

Question

I need to check whether a given image is a JPEG.

if ($_FILES["fname"]["error"] > 0) {
    $imgData = "hyperlink/holder.jpg";
} else {
    $imgData ="hyperlink/" . $_FILES["fname"]["name"];
}
// Only accept jpg images
// pjpeg is for Internet Explorer should be jpeg
if (!($_FILES["fname"]["type"] == "image/pjpeg") ) {
    print "I only accept jpg files!";
    exit(0);
}

When it goes to first statement in the first if statement it always gives I only accept jpg files!

How can I fix it?

Answer 1

Try the exif_imagetype image function.

Example:

if(exif_imagetype($filepath) != IMAGETYPE_JPEG){
    echo 'Not a JPEG image';
}