How get value from URL

Question

I want to get the value from the URL to choose data from the database by ID. I want the value for the id.

For example, if I were to open www.example.com/index.php?id=12. I want to get a value whose id = 12 in the database.

If I open www.example.com/index.php?id=7.

I want to get the value whose id = 7 in the database and so on.

Answer 1

Website URL:

http://www.example.com/?id=2

Code:

$id = intval($_GET['id']);

Answer 2

There are two ways to get variable from URL in PHP:

When your URL is: http://www.example.com/index.php?id=7 you can get this id via $_GET['id'] or $_REQUEST['id'] command and store in $id variable.

Lest's take a look:

// url is www.example.com?id=7

//get id from url via $_GET['id'] command:
$id = $_GET['id']

same will be:

//get id from url via $_REQUEST['id'] command:
$id = $_REQUEST['id']

the difference is that variables can be passed to file via URL or via POST method.

if variable is passed through url, then you can get it with $_GET['variable_name'] or $_REQUEST['variable_name'] but if variable is posted, then you need to you $_POST['variable_name'] or $_REQUEST['variable_name']

So as you see $_REQUEST['variable_name'] can be used in both ways.

Answer 3

You can get that value by using the $_GET array. So the id value would be stored in $_GET['id'].

So in your case you could store that value in the $id variable as follows:

$id = $_GET['id'];

Answer 4

You can access those values with the global $_GET variable

//www.example.com/index.php?id=7
print $_GET['id']; // prints "7"

You should check all "incoming" user data - so here, that "id" is an INT. Don't use it directly in your SQL (vulnerable to SQL injections).

Answer 5

You can also get a query string value as:

$uri =  $_SERVER["REQUEST_URI"]; //it will print full url
$uriArray = explode('/', $uri); //convert string into array with explode
$id = $uriArray[1]; //Print first array value