Converts the argument to the percent-encoded string (RFC-3986) so it can be used in the textcontent() function.
uriparam(string)
A string value.
An encoded string value.
uriparam(Provider #23) returns "Provider%20%2323".
uriparam("Question: do you like flowers?") returns "Question%3A%20do%20you%20like%20flowers%3F".