nice to know demorgan's laws actually show up every now and then ;-) -----Original Message----- From: Rasmus Lerdorf [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 04, 2001 12:58 AM To: Jason Dulberg Cc: [EMAIL PROTECTED] Subject: RE: [PHP] php in css not working with IF's
> Theoretically, either/or I'm assuming. If A isn't 10 or A isn't 9... But since A cannot be both 9 and 10 at the same time, A will *always* not be one of them. It's exactly the same as saying: if (!(A==9 AND A==10)) Obviously A cannot be both 9 and 10 at the same time so the above will be: if(!(false)) which is the same as if(true) Some people find it helpful to draw Venn diagrams of their boolean logical expressions. See http://www.lib.csub.edu/infocomp/search/boolean/venn.htm for a simple description of those. -Rasmus -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
