Question

Need a little help with this script. It’s working but I’d love a way to simplify it a little.

At the moment I have ‘ if($currentPageIndex == 4) ‘ I have to manually update the ‘4’ every time I add or remove an item from the projectlist array. What I need is someway of saying ‘if($currentPageIndex == the last item of the array)’ That way I can add / remove items without worrying about updating the number as well.

How should I go about this? I’ve read up on various options and been trying things out with no luck so far.

Also if possible would the solution be usable on the Prev & Next links as well?
So instead of the +4 and -4 it jumps to the first and last item respectively.

Any help much appreciated.

Working demo here: http://www.ok-hybrid.com/projects/monkey/
Code here :

<?php

$currentPath = explode('?', $_SERVER['REQUEST_URI']); //make sure we don't count any GET variables!
$currentPath = $currentPath[0]; //grab just the path
$projectlist = array(
        '/projects/monkey/',
        '/projects/tiger/',
        '/projects/parrot/',
        '/projects/banana/',
        '/projects/aeroplane/',
);



if(! in_array($currentPath, $projectlist) ) {
    die('Not a valid page!'); //they didn't access a page in our master list, handle error here.
}

$currentPageIndex = array_search($currentPath, $projectlist);

if($currentPageIndex > 0) { 
    $prevlink = '<a href="'.$projectlist[$currentPageIndex-1].'">Prev</a>';
} else {
    $prevlink = '<a href="'.$projectlist[$currentPageIndex+4].'">Prev</a>';
    }

if($currentPageIndex == 4) { 
    $nextlink = '<a href="'.$projectlist[$currentPageIndex-4].'">Next</a>';
} else {
    $nextlink = '<a href="'.$projectlist[$currentPageIndex+1].'">Next</a>';
}

?>



<ul id="sub-nav">

<li>
<?php
print_r($prevlink);
?>
</li>

<li>
<?php
print_r($nextlink);
?>
</li>

</ul>

Answer 1

use

sizeof($projectList) - 1

to get the desired number