I'm sure there are better menu systems around (one day perhaps I will 
look into finding another one), but

http://www.g8wrb.org/

has 18 menus on the top. My plan was to ensure that if you select a 
menu, you were presented with 17 others to chose, and not the page you 
are actually at. (The 'Uploads', "YagiUda" and 'Home' are hadled 
differently and I'm not worried about them.)

Click on "YC156" there, and you will see YC156 is not in the menu any 
more. Click on Y799 and the same happens. Now click on "Mathematica" and 
Mathematica is presented in the menu, which *not* what I want.

The code for the navigation menu is at

http://www.g8wrb.org/navigation.phps


Basically the menu is dynamically generated. Each item on the list is 
simply echoded, except for the line that contains the menu item I am 
currently on.

e.g.



The difference between those that work, and those that do not is that 
those in the root directory (y799.php, yc156.php) all work, but those in 
subdirectories (mathematica/index.php, triodes/index.php) do not.

So this code

         if( strpos($_SERVER['PHP_SELF'],"y799.php")==false )
           echo "<li><a 
href=\"http://www.g8wrb.org/y799.php\">Y799</a></li>\n";

works.

But this code

         if( strpos($_SERVER['PHP_SELF'],"mathematica/index.php")==false )
           echo "<li><a 
href=\"http://www.g8wrb.org/mathematica/\">Mathematica</a></li>\n";

does not.

I've linked a few .phps to the .php files, so

http://www.g8wrb.org/mathematica/index.phps
http://www.g8wrb.org/index.phps
http://www.g8wrb.org/navigation.phps
http://www.g8wrb.org/y799.phps

You can see most simple have a line to include 
http://www.g8wrb.org/navigation.phps

If you have any ideas how I can sort this out, please let me know.

<uk.net.web.authoring>
<Dave>
<Wed, 07 May 2008 07:56:16 +0100>


> I'm sure there are better menu systems around (one day perhaps I will 
> look into finding another one), but
> 

<?php $temp=basename($_SERVER['PHP_SELF']); ?>

Its too early in the morning and i didnt click on any of the links - but 
above might be the sort of thing your looking for rather than strpos() .


-- 
www.krustov.co.uk

In message , Dave  writes
>The difference between those that work, and those that do not is that
>those in the root directory (y799.php, yc156.php) all work, but those in
>subdirectories (mathematica/index.php, triodes/index.php) do not.
>
>So this code
>
>        if( strpos($_SERVER['PHP_SELF'],"y799.php")==false )
>          echo "<li><a href=\"http://www.g8wrb.org/y799.php\">Y799</a></l
>i>\n";
>
>works.
>
>But this code
>
>        if( strpos($_SERVER['PHP_SELF'],"mathematica/index.php")==false )
>          echo "<li><a href=\"http://www.g8wrb.org/mathematica/\">Mathem
>atica</a></li>\n";
>
>does not.

A couple of thoughts:

        echo the value returned by $_SERVER['PHP_SELF'] to make sure it
        is what you expect

        set a variable in each file that includes the navigation file,
        before the include, and use that for the comparison

Finally the manual for strpos has this warning:

        This function may return Boolean FALSE, but may also return a
        non-Boolean value which evaluates to FALSE, such as 0 or "".
        Please read the section on Booleans for more information. Use
        the === operator for testing the return value of this function.
-- 
Dominic Sexton

Dominic Sexton wrote:
> In message , Dave  writes
>> The difference between those that work, and those that do not is that
>> those in the root directory (y799.php, yc156.php) all work, but those in
>> subdirectories (mathematica/index.php, triodes/index.php) do not.
>>
>> So this code
>>
>>        if( strpos($_SERVER['PHP_SELF'],"y799.php")==false )
>>          echo "<li><a href=\"http://www.g8wrb.org/y799.php\">Y799</a></l
>> i>\n";
>>
>> works.
>>
>> But this code
>>
>>        if( strpos($_SERVER['PHP_SELF'],"mathematica/index.php")==false )
>>          echo "<li><a href=\"http://www.g8wrb.org/mathematica/\">Mathem
>> atica</a></li>\n";
>>
>> does not.
> 
> A couple of thoughts:
> 
>         echo the value returned by $_SERVER['PHP_SELF'] to make sure it
>         is what you expect

I had done that, and it is. In fact, if you look at

http://www.g8wrb.org/triodes/
http://www.g8wrb.org/triodes/index.phps

you will see it in the top right.


> 
>         set a variable in each file that includes the navigation file,
>         before the include, and use that for the comparison

Sorry, you have lost me there.


> Finally the manual for strpos has this warning:
> 
>         This function may return Boolean FALSE, but may also return a
>         non-Boolean value which evaluates to FALSE, such as 0 or "".
>         Please read the section on Booleans for more information. Use
>         the === operator for testing the return value of this function.

I'll check that out.

Message-ID:  from Dominic Sexton
contained the following:

>>But this code
>>
>>        if( strpos($_SERVER['PHP_SELF'],"mathematica/index.php")==false )
>>          echo "<li><a href=\"http://www.g8wrb.org/mathematica/\">Mathem
>>atica</a></li>\n";
>>
>>does not.

Actually, that's not what you have in your code.  Note the forward slash
in front of mathematica.

 if( strpos($_SERVER['PHP_SELF'],"/mathematica/index.php")==false ) 
          echo "<li><a
href=\"http://www.g8wrb.org/mathematica/\">Mathematica</a></li>\n";

As Dominic pointed out this evaluates to a  non-Boolean value which
evaluates to FALSE, in this case, 0

=== should sort it out

However, I find the code to be a bit long winded.

Why not  just do a simple comparison?
 if( $_SERVER['PHP_SELF']!="/mathematica/index.php") 
          echo "<li><a
href=\"http://www.g8wrb.org/mathematica/\">Mathematica</a></li>\n";

Even better, I'd set up an array of links (which could possibly be
dynamically generated eventually)

$links=array("Mathematica"="/mathematica/index.php","Triodes"=>"/triodes/index.php","Other
file"=>"/otherfile.php", ...add more links as required);

Then:

foreach($links as $key=$value){
 if( $_SERVER['PHP_SELF']!=$value) 
          echo "<li><a   href=\"$value\">$key</a></li>\n";
  }
}

-- 
Regards,

Geoff Berrow

Geoff Berrow wrote:
> Message-ID:  from Dominic Sexton
> contained the following:
> 
>>> But this code
>>>
>>>        if( strpos($_SERVER['PHP_SELF'],"mathematica/index.php")==false )
>>>          echo "<li><a href=\"http://www.g8wrb.org/mathematica/\">Mathem
>>> atica</a></li>\n";
>>>
>>> does not.
> 
> Actually, that's not what you have in your code.  Note the forward slash
> in front of mathematica.
> 
>  if( strpos($_SERVER['PHP_SELF'],"/mathematica/index.php")==false ) 
>           echo "<li><a
> href=\"http://www.g8wrb.org/mathematica/\">Mathematica</a></li>\n";
> 
> As Dominic pointed out this evaluates to a  non-Boolean value which
> evaluates to FALSE, in this case, 0
> 
> === should sort it out
> 
> However, I find the code to be a bit long winded.
> 
> Why not  just do a simple comparison?
>  if( $_SERVER['PHP_SELF']!="/mathematica/index.php") 
>           echo "<li><a
> href=\"http://www.g8wrb.org/mathematica/\">Mathematica</a></li>\n";
> 
> Even better, I'd set up an array of links (which could possibly be
> dynamically generated eventually)
> 
> $links=array("Mathematica"="/mathematica/index.php","Triodes"=>"/triodes/index.php","Other
> file"=>"/otherfile.php", ...add more links as required);
> 
> Then:
> 
> foreach($links as $key=$value){
>  if( $_SERVER['PHP_SELF']!=$value) 
>           echo "<li><a   href=\"$value\">$key</a></li>\n";
>   }
> }
> 


Thanks a lot for that.

I implemented something based on what you suggested. I decided to move 
ALL .php files (with the exception of the menu itself and the main home 
page) to subdirectories.

i.e what was previously

http://www.g8wrb.org/y799.php
is now
http://www.g8wrb.org/y799/index.php

This means people will not have .php on the end of any links. Hence I 
need to append index.php to my links before comparing with 
$_SERVER['PHP_SELF']. But the following seems to be ok.




          $links=array(
           "Mathematica"=>"/mathematica/",
           "Triodes"=>"/triodes/",
           "Tetrodes"=>"/tetrodes/",
           "Pentodes"=>"/pentodes/",
           "Bases"=>"/bases/",
           "Goodies"=>"/useful-stuff/",
           "Application notes"=>"/application-notes/",
           "Browse"=>"/data/",
           "Thanks to"=>"/thanks/",
           "Goodies"=>"/useful-stuff/",
           "Solaris laptop"=>"/useful-stuff/Sun/laptop/",
           "Y799"=>"/y799/",
           "YC156"=>"/yc156/",
           "New data"=>"/recently-added/",
           "Yagi Uda"=>"/yagi/",
           "Help"=>"/help/",
           "Links"=>"/links/"
          );

         foreach($links as $key=>$value){
            // compare the actual file name with the data above, after 
appending index.php"
            $fullfile=$value."index.php";
            $f=$_SERVER['PHP_SELF'] ;
            // echo "$f      $fullfile<br><br>";
            if( $_SERVER['PHP_SELF'] !=$fullfile)
                echo "<li><a href=\"$value\">$key</a></li>\n";
         }


I might look some time at creating some sub-menus. Even if my menus are 
not the best in the world, I'd rather something I understand, than some 
black-magic which works.

Message-ID:  from Dave contained the following:

>I might look some time at creating some sub-menus. Even if my menus are 
>not the best in the world, I'd rather something I understand, than some 
>black-magic which works.

It's an approach I adopt.  If you can understand it, you can tweak it to
suit your needs.

Next step would be to make the menu array self generating, which I'll
leave as an exercise :-)

-- 
Geoff Berrow  0110001001101100010000000110
001101101011011001000110111101100111001011
100110001101101111001011100111010101101011