Magic Bytes Reference Table

Obtain magic bytes using PHP

function magic_bytes($path, $position = 0, $bytes = 4)
{
    if (!file_exists($path)) {
        return null;
    }
    $handle = fopen($path, 'rb');
    fseek($handle, $position);
    $bytes = bin2hex(fread($handle, $bytes));
    fclose($handle);
    return $bytes;
}