Validate that a file is a picture in PHP

Question

If a file is uploaded to the server, is there a way using PHP, to make sure that it\'s actually a picture and not just a file with a .jpg or .gif extension?

Answer 1

best way to check if file is an image

function is_image($path)
{
    $a = getimagesize($path);
    $image_type = $a[2];

    if(in_array($image_type , array(IMAGETYPE_GIF , IMAGETYPE_JPEG ,IMAGETYPE_PNG , IMAGETYPE_BMP)))
    {
        return true;
    }
    return false;
}

more: http://www.binarytides.com/php-check-if-file-is-an-image/