Question

I have image upload php class. This process uploaded Images(.png,jpeg,.gif).
I am using this function to find image type

 function getImageType($image_name){
    return end(explode('.',$mage_name));
              }

if someone upload any file with fake extension . error will happen. How can i Check type of image without
checking extension?

Answer 1

You can use getimagesize to get the mime type, and switch on the type to create generate extension.

In code this could look like something like this:

$image_info = getImageSize($path);
switch ($image_info['mime']) {
case 'image/gif':
    $extension = '.gif';
    break;
case 'image/jpeg':
    $extension = '.jpg';
    break;
case 'image/png':        
    $extension = '.png';
    break;
default:
    // handle errors
    break;
}