Forum:Template Condition A and B or C

How can I write the following conditions in a template:

IF Parameter A is defined AND (Parameter B >= 5 OR Parameter C contains the string gota"boy!)
 * Returns true
 * Returns false

I knew #if: and #ifeq: etc. but all seem to support testing 1 condition only. What syntax should I use to join all those conditions together? --MyBrute Resource Center@Ronga 11:09, 16 May 2009 (UTC)


 * mw:Help:Extension:ParserFunctions. 13:25, 16 May 2009 (UTC)


 * I read this help page long time ago. But it appears it doesn't say anything about the AND or OR operators that I want. What are the equivalents of AND and OR in Mediawiki templates?? --MyBrute Resource Center@Ronga 15:35, 16 May 2009 (UTC)
 * IF I understand you correctly,  might work. I'm not sure if it can look at whether a string contains a specific part, if that is neccesary though.  18:35, 16 May 2009 (UTC)
 * This is an alternative way complex but depends on how big you have the answer of the true or the false