PHP Logic Problem

[buy_cars]

Hello all,

I have a problem that is driving me crazy and I know it has to be a lot easier then the way I am trying to do it. (with no success).

I am trying to load a highlighted "home" button in my naviagation bar so that it will display only if you are on the root home page. If a visitor is not on the homepage, a grayed out "home" image
will show. Can someone look at this code and post how I could fix it so that the highlighted version of the home button loads ONLY on the root/index.php page? and not on any other directory "index.php" page?

function home_button()   

 {  

    global $BASE_URL; 
    if (strpos('$_SERVER[SERVER_NAME]$_SERVER[PHP_SELF]',"www.domain.com/index.php")!==false)
	{ 
        return "<a href='$BASE_URL'><img src='$BASE_URL/img/welcome_on.gif' border=0 align=absbottom></a>"; 
    } else 
        return " $_SERVER[SERVER_NAME] <a href='$BASE_URL'><img src='$BASE_URL/img/welcome_off.gif' border=0 align=absbottom></a>"; 
} 

Thanks

[sidney]

 if  (strpos('$_SERVER[SERVER_NAME]$_SERVER[PHP_SELF]',
"www.domain.com/index.php")!==false)  

should be

  if  (strpos($_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'];,
"www.domain.com/index.php")!==false)  

[planetsim]

Why do you have a semi colan in the if statement 😕

if  (strpos($_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'],"www.domain.com/index.php")!==false)

[sidney]

sorry typo semi should be a coma