StrRfix

Syntax
str strRfix(str _str, int _length [, char _char])

Description
Adds the character _char before string _str to obtain a string with a length of _length.

Default filler character is ' '.

If _str is longer than _length, this returns the first _length characters of _str.

Example
strRfix('aaa', 5, '_') //returns the string '__aaa'.

strRfix('12345', 3) //returns the string '123'.