if statement not working

[Ian_Moody]

ok for some reason I can't get

if ($_GET['album'] != 'demo'  || $_GET['album'] != 'egn') {
	echo "<p>Sorry, but you have requested an album that does not exist.</p>";
}
else {
	require("lyrics/" .$_GET['album']. ".html");
}

or

if ($_GET['album'] != 'demo'  ||  'egn')

to work. It's not a major problem because I just swapped it around to

if ($_GET['album'] == 'demo' || 'egn') {
	require("lyrics/" .$_GET['album']. ".html");
}
else {
	echo "<p>Sorry, but you have requested an album that does not exist.</p>";
}

But if someone could explain why the first way didn't work I'd appreciate it.

[tunage]

if ($_GET['album'] != 'demo'  || $_GET['album'] != 'egn') 

This statement will always return false (if album doesnt equal "demo" OR album doesnt equal "egn" - which ever you pass to it the other will be false), you need to use AND instead.

if ($_GET['album'] != 'demo' && $_GET['album'] != 'egn') 

Or re-phrase it as this (album doesnt equal "demo" or "album")

if (! ($_GET['album'] == 'demo'  || $_GET['album'] == 'egn') ) 

[Ian_Moody]

Thanks a lot, I see what was going wrong now.