How to Link PHP Sub Categories(Pages) Dynamically - php

Question

I have There PHP File getting Data From MySQL Database called:
clubs.php
club.php
player.php
the clubs.php list all clubs from tbleclubs table and it looks like:
clubs.php
$database = new Database();
$res = $Db->query("SELECT * FROM tblclubs");
foreach ($res as $dataRow): ?>
<span><?php echo $dataRow['id']; ?></span>
<span><a hrer=""><?php echo $dataRow['name']; ?> </a></span>
<?php endforeach; ?>
and club.php listing all players in a club from tblclub table
club.php
$database = new Database();
$res = $Db->query("SELECT * FROM tblpclub");
foreach ($res as $dataRow): ?>
<span><?php echo $dataRow['id']; ?></span>
<span><a hrer=""><?php echo $dataRow['name']; ?> </a></span>
<?php endforeach; ?>
and finally the player.php is from tbleplayer:
player.php
$database = new Database();
$res = $Db->query("SELECT * FROM tblplayers");
foreach ($res as $dataRow): ?>
<span><?php echo $dataRow['id']; ?></span>
<span><a hrer=""><?php echo $dataRow['name']; ?> </a></span>
<?php endforeach; ?>
I have set up a Foreign Key(FK) for tblclub as clubs_id and for tblplayers as club_id.
Now, my question is, how can I dynamically navigate to each selected item in next page like:
clubs->club->player
Thanks

Answer 1

First of all you have some errors in your HTML (it should href and not hrer for links)
Secondly, using a select * type of query is bad form; you should generally be choosing specific keys from your table, and not just all of them. You will also need to be link your tables if you want this to work properly; it's difficult to tell what specific rows you have in your tables; some structure would be helpful.
That said you would need to structure your queries something like this. For example to get a list of players a specific club:
SELECT p.playerid, p.name,
FROM tblplayers p, tblclub c
WHERE p.club_id = c.club_id
this query will get a list of all players on a specific club.
As for linking you would could modify your links to be something like this. To link to a specific player in a specific club, this would be the link on club.php to player.php:
<?php echo $dataRow['name']; ?>
Then to get the info you could just get the playerid from the URL by using a GET variable, like this: $playerid = $_GET['playerid']
and then get your information from the query, to do what you like. You can use the data in any way you like from there.
This is just a start, but you should be able to extrapolate from this for the rest of your questions. Hope this helps.

Answer 2

Ok, you are now rendering static lists.
To make the navigation dynamic you would basically need 3 things:
create links with ids
fetch this id from the URL
and query the db using the WHERE statement to select that specific id
You have already started with links: <a hrer="">, but it's href.
clubs.php - would render the overview of all clubs with links to each club
Place this in your foreach to construct the links by attaching the ids.
foreach ($res as $dataRow) {
$id = $dataRow['id'];
$name = $dataRow['name'];
$link = 'club.php?id=' . $id;
echo '<span>' . $id . '</span>';
echo '<span>' . $name. '</span>';
}
Now you can click for instance club.php?id=2.
But club.php would need to handle the incoming id, right?
club.php - renders the list of players with links to each player
You basically repeat the pattern from above, but with a different anchor base, this time it's player.php. You should get a list with player.php?id=x links.
How to handle the id in each of the scripts?
The id is incoming via $_GET.
You can use var_dump($_GET['id']) to see the value. Use a variable, like so $id = $_GET['id'].
(Later, when everything works: do not forget to secure and escape the incoming data properly.)
Then use $id in your database query:
SELECT * FROM tblplayers WHERE player_id = ' . $id;