code    = "/\<code\>.*^\<\/code\>/smU"
file    = "/\<file\>.*^\<\/file\>/smU"
nowiki  = '/nowiki\>.*^\<\/nowiki/smU'
nowiki2 = "/%%.*^%%/smU"
html    = "/\<html\>.*^\<\/html\>/smU"
php     = "/\<php\>.*^\<\/php\>/smU"