RINSTR
n = RINSTR ( [start], s1, s2 )
Returns the position of the last occurrence of string s2
in string s1
starting from the position start
.
If there is no match, RINSTR returns 0
Example
"ab12ab34"
s = print rinstr(s, "ab") ' Output: 5
print rinstr(6, s, "ab") ' Output: 0