John Davidson

Message:

I have 2 runtime environment simultanously :

• Front-end : Angular JS (localhost:4401) run with VS Code (ng serve)


• API : PHP run with WAMP (localhost) attached to a database.

For each call from my front-end to my API, I call session start like this :

(from "session.php" which is included in each *.php page)

session_start();



// Make sure we have a canary set

if (!isset($_SESSION['canary'])) {

    session_regenerate_id(true);

    $_SESSION['canary'] = [

        'birth' => time(),

        'IP' => $_SERVER['REMOTE_ADDR']

    ];

}

I noticed that my $_SESSION variable has always a "null" value while executing code and it can't retrieve the session initially created (directory: wamp64\tmp).

Example of my call from Angular :

  checkLoginStatus(){

    // Used to check if stay logged in cookie is set - autologin...

    return this._http.get<loginResponse>(environment.api+"api/check_autologin.php").pipe(catchError(this.handleError))

  }

Do you have any idea ?
Thanks in advance.

---

My Answer:
Angular JS front-end code)

javascript
$http({
method: 'POST',
url: 'http://localhost/api.php',
data: {
// data to send to API
},
withCredentials: true
}).then(function(response) {
// handle response from API
});


And in my PHP API code, I have the following:

php
session_start();
$_SESSION['test'] = 'test';
echo json_encode($_SESSION);


However, when I make a call from my front-end to my API, the `$_SESSION` variable is always null.

This is because the `$_SESSION` variable in PHP is specific to each session, and since you are making separate calls from your front-end to your API, each call is considered a separate session.

To maintain session state across multiple calls, you can use cookies or tokens to store session information and pass it back and forth between your front-end and API.

Alternatively, you can look into using a session management solution like JWT (JSON Web Tokens) to handle authentication and session management in a stateless manner.

Overall, the issue you are facing is due to the nature of PHP sessions and how they are handled in a stateless environment like a REST API.