STRING uppercase(STRING str)
This function changes each character in str to it's uppercase value and returns the result.
crypt() | explode() | lowercase() | match_begin() | match_pattern() | match_regexp() | match_template() | pad() | regexp() | strcmp() | strfmt() | strgraft() | strlen() | strsed() | strsub() | substr() | uppercase() | match_crypted() | split() | stridx()