Robert Cummings wrote: > On Wed, 2007-06-13 at 13:57 -0400, tg-php@xxxxxxxxxxxxxxxxxxxxxx wrote: >> double pipes constitutes an "OR" operation. You can use the keyword OR as well. Also, && and AND are the same as well. >> >> http://us.php.net/manual/en/language.operators.logical.php > > They aren't exactly the same. Make sure and read the order of precedence > note. The following, for example, are not equivalent: I knew that they we're not exactly the same due to order of precedence, but I ran Robbert's code snippet and found that my assumptions about the outcome incorrect! my assumption was that '=' had lower precedence that 'and' ... somehow that felt right, obviously I was wrong. it took me a few seconds to see the error of my ways :-) maybe there are other that are confused ... maybe the output of following little snippet might help to clarify: <?php $true = true; $false = false; $test1 = $true && $false; $test5 = ($test2 = $true and $false); $test3 = ($true && $false); $test4 = ($true and $false); var_dump($test1, $test2, $test3, $test4, $test5); ?> thanks to Robbert for the brainteaser ;-) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
