[PHP-DB] Regular Expressions? URGENT

[Aaron Wolski]

Hi All,
 
Sorry for OT post but need some info.
 
Does anyone know a good tutorial that explains regular expressions in
DUMMY terms?
 
I have a list of characters that I need to check to see if they are in a
string. I tried creating an array of the characters but some of them are
like  ' " and ` which seem to cause some problems.
 
Any good turotials for regular expressions?
 
Thanks a bunch!
 
Aaron