How to get PHP to open a link that changes?

So say I have a list,

Pet ID;

1. Jimmy
2. Alvin
3. Spot
4. Snowy
5. Bob

How do I make PHP know the id of the pet and then open that file. So if the user clicked on the number 1 it would open that profile. NOTE: These numbers can change so doing it with HTML isn't an option, I can't do <a href="includes/profile_1">1. Jimmy</a>

How do I do this?

 

where do you get the IDs from? They must come from somewhere? Just use the id-variable in the link?
Or, better, rethink your project, and rethink the way you pull information.

 

Ok, sorry. I should have gone into more depth.

Basically I'm displaying information that I have in a database. I want to be able to allow the user to click on the id number and then it'll open a page displaying the pets info.

So, I'd have a database of pet's. I'd then display them on a page. If a user wants to click on a pet if it would bring up a profile page about the pet.

Does that explain it better?

 

Yes, that was sort of what I figured - but I'm failing to see how the IDs will change?
What you need to do is pull the information from the database for the pets in question - whether or not that's the user's pets, or just a collection of all pets, or whatever. These pets will have a unique ID (or, at least, they should), in the database - just use that in the link? Something like this:

//assuming that you're pulling the info and running this with a while-loop
echo '<ul>';
while ($row = $stmt->fetch()) {
    $id = $row['id'];
    $petname = $row['petname'];

echo '<li><a href="includes/profile_'.$id.'">'.$petname.'</a></li>';
}
echo '</ul>';

Code (markup):

That should do exactly what you want, really.

 

Hi.
This code dn't have database. Only pass Id and get your Page... try this code

<a href="index.php?id=1"/>1. Jimmy</a>
<?php
if($_GET['id']==1)
{
?>
<a href="includes/profile_1"/>Jimmy</a>
<?php
}
?>

 

Jeez... How about:

<a href="index.php?page=1">1. Jimmy</a>
<?php
  if (isset($_GET['page'])) {
     include ('includes/profile_'.$_GET['page'].'');
  }
?>

PHP:

which would actually GET the content of the file, instead of printing another link to something ...