[SOLVED] Help With An Array

[JSHINER]

Array
(
    [0] => Array
        (
            [category_id] => 25
            [category_name] => Apple
        )

    [1] => Array
        (
            [category_id] => 11
            [category_name] => Banana 
        )

    [2] => Array
        (
            [category_id] => 73
            [category_name] => Clown
        )

    [3] => Array
        (
            [category_id] => 14
            [category_name] => Dog
        )
);

 

With the above array, let's say I'm on a page that is currently "Banana" (page.php?id=11) - how can I get it to know what the next and previous category is? So Next: 73, Previous 25 (using the category_id)

 

Thanks!

[Zane]

What is your code so far that tells the page that it is "Banana"

[JSHINER]

The page hits another query using the ?id= in the address. So the page knows its "Banana" by the page.php?id=11 (11 is the category_id of Banana)

[Andy-H]

$cat_id = array(25, 11, 73,14);
$cat_name = array('Apple', 'Bananna', 'Clown', 'Dog');

$category = (int)$_GET['id'];

for ($i = 0; $i < count($cat_name); $i++)
{

if ($cat_id[$i] == $category)
{
$last = --$i;
$next = ++$i;
}

}

echo '<a href="page.php?id=' . $cat_id[$last] . '"><< ' . $cat_name[$last] . '</a> || ';
echo '<a href="page.php?id=' . $cat_id[$next] . '">' . $cat_name[$next] . ' >></a> 

 

 

??

[Zane]

What Where is your code so far that tells the page that it is "Banana"

[JSHINER]

Andy-H - Thanks! But...

 

That returns Next as 14 - Last as 73

 

What I was looking for was Next: 73, Prev: 25

 

Any thoughts?

[JSHINER]

Actually sorry - that returns nothing.

[Andy-H]

Do you have any actual code you are using for this already, it would be alot easier to understand what you are trying to achieve if you could paste it here?

[JSHINER]

<?php

// Sample Code

$cat_id = array(25, 11, 73,14);
$cat_name = array('Apple', 'Bananna', 'Clown', 'Dog');

$category = 11;

for ($i = 0; $i < count($cat_name); $i++)
{

if ($cat_id[$i] == $category)
{
$last = --$i;
$next = ++$i;
}

}

echo '<a href="page.php?id=' . $cat_id[$last] . '"><< ' . $cat_name[$last] . '</a> || ';
echo '<a href="page.php?id=' . $cat_id[$next] . '">' . $cat_name[$next] .  '></a>';
?>

 

Using the above. It works great for $last, but for $next it is showing as the current (in this case 11 since I set it to that)

[Andy-H]

$last = $i - 1;
$next= $i + 1;

 

Sorry, try this in place of -

 

$last = --$i;
$next = ++$i;

[JSHINER]

Perfect! Thanks!

[Andy-H]

NP