language number

A conversion of the language code to a number between 0 and 61. The language number eliminates problems caused by the use of uppercase and lowercase language codes. The language code corresponds to the language number by the following convention: Language code range Corresponding language number range 0 to 9 0 to 9 a to z 10 to 35 A to Z 36 to 61.

Example

Language code b = Language number 11 Language code B = Language number 37