the functions actually came from the php&mysql book I bought to learn php years ago.

usefull functions for any php site to have available.
and, since from manual cdrom, well documented in purpose. which helps people to use appropriately.

as Oz pointed out to me,
for posting code the Verbatim tag is usefull, as it kills all tr formatting.
leaving just the text as entered.
no making smileys out of the : ) combinations.