Александр

$ifp = fopen( $output_file, 'wb' ); 
    // $data[ 0 ] == "data:image/png;base64"
    // $data[ 1 ] == <actual base64 string>
    $data = explode( ',', urldecode($_GET['image']));
    fwrite( $ifp, base64_decode( $data[ 1 ] ) );
    fclose( $ifp );

if sayhello.lower() in message.text.lower():
  ...

SELECT * FROM `users`
WHERE  TIMESTAMPDIFF(DAY, DATE_ADD(`birth`,INTERVAL (YEAR(CURDATE())-YEAR(`birth`)) YEAR), CURDATE()) = 0