Re: [PHP] Creating 'Previous - Next Buttons' Logic - Novice Question

[Dan]

""Daniel Brown"" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
On 6/15/07, revDAVE <[EMAIL PROTECTED]> wrote:
Novice Question: I would like to create a set of pages that could use 
some
kind of logic to have "previous - next buttons "so that when the button 
was
clicked it would automatically go to the next page - or the previous 
page.

I know very little about PHP ...  however, I am hoping that there is some
kind of preset " open source" php code that I might be able to use.

I can envision something like this:

- An 'include page' that might store an array of the list of pages such 
as:


start array...

pos1 = page1.htm
pos2 = page17.htm
pos3 = page5.htm
etc.....

stop array...

- then  a variable could be set for the current page such as:


thispage = 2  - Place on the array equals position 2 (page17.htm)


then the next button would  add 1 to the current place on the array- 
(pos3)


-  and the previous button would be minus 1 place on the array - (pos1)

... that type of thing

Q:  Is there any "open source" code template that I can check out like 
this?




--
Thanks - RevDave
[EMAIL PROTECTED]
[db-lists]

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There are several ways to do this, but here's one way:

<?
$page[] = "page1.htm";
$page[] = "page17.htm";
$page[] = "page5.htm";
// Or you can do:
// $page = array('page1.htm','page17.htm','page5.htm');

session_start(); // For storing the user's current position

if(!$_GET['page_num']) {
   $i = 0;
}

if($i != 0) {
   echo "<a href=\"".$page[($i - 1)]."\">&lt;&lt; Previous</a>\n";
}

if($i != (count($page) - 1)) {
   echo "<a href=\"".$page[($i + 1)]."\">Next &gt;&gt;</a>\n";
}

include('page'.$i.'.htm');
?>

--
Daniel P. Brown
[office] (570-) 587-7080 Ext. 272
[mobile] (570-) 766-8107


Totally would work for his purposes but let's clean it up a bit for a 
beginner.

<?
$page = array('page1.htm','page17.htm','page5.htm'); // array of the pages 
you have

if(isset($_GET['page_num'])) // a current page number has been set in the 
url
{
$i = $_GET['page_num'];  // set variable i to the current page number
   if($i  != (count($i)-1))  // if the current page number isnt the last 
entry in the array display next
   echo "<a href=\"".$page[($i + 1)]."\">Next &gt;&gt;</a>\n";
   if($i != 0)  // if the current page isn't the first page display 
previous
       echo "<a href=\"".$page[($i - 1)]."\">&lt;&lt; Previous</a>\n";
}
include('page'.$i.'.htm');  // show the current page you're at
?>

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