PHP || (and) operator question

This site is best viewed in a modern browser with JavaScript enabled.

andy106

I am trying to make my navigation to change color when selected. the class for selected is "current"

so I wrote this:

so if the url in the address bar is not first.php or second.php it should return false and echo " ", but for some odd reason this is returning true and posting class="current"> even if the url is posting http://www.domain.com/fourth.php.

JUST FYI here is the myfullpath function:

function myfullpath() { $s = empty($SERVER["HTTPS"]) ? '' : ($SERVER["HTTPS"] == "on") ? "s" : ""; $protocol = strleft(strtolower($SERVER["SERVER_PROTOCOL"]), "/").$s; $port = ($SERVER["SERVER_PORT"] == "80") ? "" : (":".$SERVER["SERVER_PORT"]); return $protocol."://".$SERVER['SERVER_NAME'].$port.$_SERVER['REQUEST_URI']; } function strleft($s1, $s2) { return substr($s1, 0, strpos($s1, $s2)); }

thanks for your help.

adarshakb

Hi you missed a point there

<ul class="<?php if(myfullpath() == "http://www.domain.com/first.php" || "http://www.domain.com/second.php"){echo "current";} else echo " "; ?>">

check If statement
It should be

<ul class="<?php if(myfullpath() == "http://www.domain.com/first.php" || myfullpath() == "http://www.domain.com/second.php"){echo "current";} else echo " "; ?>">

PS: I didnt execute this code... have to check yourself

andy106

Hi Thank you that's right I forgot about that, I atually ended up using elseif instead, so :

if(myfullpath() == "http://www.domain.com/first.php"){echo "current";} elseif(myfullpath() == "http://www.domain.com/second.php") {
echo "current";}else echo " ";
I wonder which is a better practice or if there is any difference in server resources.

Thanks again for all your help

adarshakb

Both, in this case, are the same. As in using A || B it checks A and if true it ignores B. Similarly in ifelse if first IF statement is true it ignores the second.

But from a view of code maintenance its a single if statement thats better.

andy106

yea you are right the elseif statements can become hard to figure out after a while and also || is much shorter and easier to troubleshoot. I have changed it all over to || and it works great! thank you so much !

OctoberWind

<?php
$fullPath = myfullpath();
$class="";
if ( 
       ($fullPath == "http://www.domain.com/first.php") || 
       ($fullPath == "http://www.domain.com/second.php")
)
{
     $class = 'class="current" ';
}
?>

<ul <?php echo $class; ?> >

Just a couple of points to add:

-- single call to the function (small improvement to performance, plus a bit easier to maintain/reuse later on)
-- [expanding from adarshakb] wrap each IF check in it's own parenthesis, then wrap all the IF checks in parenthesis
-- I prefer to to create the empty $class string, then populate it if needed, and echo out the entire string. This way, you don't leave unnecessary empty 'class=""' in your HTML (again, just a small personal preference)

Dasher

Just for clarification the || operator is the OR operator, not the AND operator which is &&. The thread title is a little confusing in that regard.

adarshakb

YA!!! didnt notice that