Simple PHP question

Question

Yes, it's a simple question, but one that I can't find a answer for through the PHP documentation or Google. (I'm just learning PHP....)

If this works:

<?php $d=date("D"); if ($d="Mon") { ?>echo this text on Monday<?php endwhile; ?><?php } else { ?><?php } ?>

Why doesn't this?

<?php $d=date("D"); if ($d="Mon,Tue") { ?>echo this text on Monday and Tuesday<?php endwhile; ?><?php } else { ?><?php } ?>

Do I need different delimiters between Mon and Tue? I've tried || and && ....

Thanks, Mark

Answer 1

You're assuming that date("D") will return more than one value. It will only return the current day. Instead use this:

<?php $d=date("D"); if (in_array($d, array("Mon","Tue"))) { ?>echo this text on Monday and Tuesday<?php endwhile; ?><?php } else { ?><?php } ?>

Answer 2

The string $d is either going to contain "Mon" or "Tue", never "Mon,Tue". You can't compare strings this way. You need to use an expression like this:

if ($d == "Mon" || $d == "Tue") {

Answer 3

Maybe this:

   if ($d == "Mon" || $d == "Tue") {

also, php has two operators for equality.

== and ===

Answer 4

You're performing an assignment of $d when you say ($d="Mon"). What you want is the comparison operator (==):

if ($d == "Mon" || $d == "Tue")

Answer 5

try:

<?php $d=date("D"); if (in_array($d,array('Mon','Tue'))) { ?>echo this text on Monday and Tuesday<?php endwhile; ?><?php } else { ?><?php } ?>