Appending data to an anchor tag

Question

i am new to PHP , i want to append data like query string and data i will recieve by $_GET[] or $_POST[], but have facing a problem

i have done something like this <a href="?ref=login_detail?id=<?php echo $car_id; ?>">Hello</a>

this ?ref=login_detail is a function which navigate me to another page. How can I pass $car_id to anchor tag so that is available in another page?

Here is function

public function login_detail(){

    include('display/car_detail.php');

}

Answer 1

First of all - only first parameter in URL should be prefixed will ?, every other should be prefixed with &.

So your URL should look like:

<a href="?ref=login_detail&id=<?php echo $car_id ?>">Hello</a>

Note the & instead of second ?.

After this, in the target script (which is probably index.php) you can catch your $car_id using:

var_dump($_GET['id']);

This should print the $car_id you pass to it by clicking the link.

---

Going further, depending on your architecture you can change your method to accept some parameters like this:

class Obj
{
    public function login_detail($id)
    {
        //do something with passed $id
        echo $id;
    }
}

(...)
$obj = new Obj();
$obj->login_detail($_GET['id']);

or just use it within the method itself:

class Obj
{
    public function login_detail($id)
    {
        echo $_GET['id'];
    }
}
$obj = new Obj();
$obj->login_detail();