[RESOLVED] How do you break out of if statements?

conjurer

I am not sure if that is the right way to ask this.

I got this code working but thought I should break out of the code when I hit a test that is false so it doesn't have to run through the other lines that will also be false. Thus I would not have style3 and style4 if I didn't have style2 >>> so if I have a failure with $style2 being NULL then I want to skip to the end of all this and do the processes that follow it. Likewise, if $style1 fails then there wont be a style2 (or 3 or 4) so it can just skip to the end of the function.


     if ($style1) 
     echo "<link rel='stylesheet' type='text/css' href='".$style1 ."'>\n";     

     if ($style2)
 echo "<link rel='stylesheet' type='text/css' href='".$style2 ."'>\n";     

if ($style3)  
 echo "<link rel='stylesheet' type='text/css' href='".$style3 ."'>\n"; 

if ($style4 ) 	
 echo "<link rel='stylesheet' type='text/css' href='".$style4 ."'>\n";

Thanks!

zabmilenko

Where are your braces at?

The way it is coded, each block is independent.

Try this:

if ($style1)
{
    echo '<link rel="stylesheet" type="text/css" href="'.$style1 .'" />' . "\n";     

if ($style2)
{
    echo '<link rel="stylesheet" type="text/css" href="'.$style2 .'" />' . "\n";

    if ($style3)
    {
       echo '<link rel="stylesheet" type="text/css" href="'.$style3 .'" />' . "\n";

       if ($style4 ) 
       {
            echo '<link rel="stylesheet" type="text/css" href="'.$style4 .'" />' . "\n";
       }
    }
}
}

Note the usage of double quotes instead of single and the extra / at the end of the tags to close them. This makes your code a bit more forward compatible.

There is another way to do it with arrays...

Rodney_H_

I would suggest you take a look at the SWITCH statement:

http://www.php.net/switch

NogDog

zabmilenko wrote:
...
Note the usage of double quotes instead of single and the extra / at the end of the tags to close them. This makes your code a bit more forward compatible.

Hmmm????

Both double and single quotes are perfectly valid for attribute values in both HTML and XHTML.

And as far as the self-closing tags ("/>"), any decent editor that comes with "HTML Tidy" can do that automatically for you if you want to change to XHTML at some point; and if you're outputting HTML then all you're doing is adding two unnecessary bytes to every stand-alone tag. For that matter, with all the discrepancies with what mime type should be used for XHTML documents and whether they should have .xml or .html extension, along with the fact that at least 99% of the XHTML documents out there don't do anything that HTML documents can't do just as well (with more consistent browser support), I don't really understand why people bother with XHTML (except that it sounds cooler and makes it seem like you're more up-to-date, I guess?).

zabmilenko

NogDog wrote:
... I don't really understand why people bother with XHTML (except that it sounds cooler and makes it seem like you're more up-to-date, I guess?).

I really really really want to start using XSLT over XML one day, and sticking to strict XHTML makes it easier to make that transition. However, my current game project uses html 4.01 transitional because it's much more flexible than xhtml. I've been using XHTML rules while I code my 4.01 documents for good habit.

Also, I don't let auto-recoders (al a tidy, CSE, et cetera) touch my code. One day I tidied the entire advancedpowers.com code base by accident simply because the toolbar button in eclipse was right next to the one for "start apache". I lost several hours of work and had to rebuild my workspace from CVS.

As for double and single quotes, you are right. There is no common standard that forbids one of their uses over another. I guess that one comes down to preference.

Your call, Conjurer