Question

I am fetching all records from a db table into a page using;

SELECT * FROM table_name;

The page displays a summary of car details:

Now the idea is to create another page that will load the full content of each car. The issue is that I have no idea how to do it. I have searched on the internet but i dont get any results and i am new to php.

MYSQL query would be something like;

SELECT * FROM table_name WHERE id = {$clicked-id}

where clicked id is the previous clicked car. i guess i have to assign an id to each previous car title.

I am quite lost, can someone please help me.

Answer 1

Read the PHP manual, it’s very helpful.

Basically the link should be something like:

<a href="/detail.php?id=<?= $car_id ?>"> car info .. </a>

So you pass the clicked id in the id parameter.

Then, in your detail page, you retrieve it like this:

<?php
  $car_id = $_GET['id'];
  $query = 'SELECT * FROM cars WHERE id = '.intval($car_id);
?>

I’m using $_GET here because the parameter came in the URL. Again, check out the PHP manual, it’s very helpful with this early stuff.

Note that I used intval to keep SQL injection off my back. You should research about it if you don’t know what it means. The basic idea here is to prevent a user from calling something like detail.php?id=1;DROP TABLE cars;, which, if not using intval, would make your query:

SELECT * FROM cars WHERE id = 1;DROP TABLE cars;

Which would destroy your data.