How to get data from database using session variable in PHP?
I will show you a good example of how to get data from database using session variable in PHP. A session variable is a way to store unique user details information and will be used across multiple pages. The session variable is solving the problem of storing unique user information for use across multiple pages.
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How to get current session ID in PHP?
If you want to get a session id, you can use the session_id function, as shown in the following snippet. That should give you the current session id. The session_id function is interesting because it can also take one argument: a session id.
How are cookies and session variables used in PHP?
Cookies are a way of storing data about a user on the user’s computer. Session variables are typically used in applications that need to track a user’s activity. Cookies are typically used in applications that need to store information about a user for a single site.
How to display logged in user information in PHP?
Such functionality can be created using session variables. Session variables exist only while the user’s session is active. After the session completes, the session variables are destroyed.
How to remove all global session variables in PHP?
To remove all global session variables and destroy the session, use session_unset() and session_destroy(): Create a session variable called “favcolor”.
How to delete all session data at once in PHP?
On the other hand, if you want to delete all session related data at once, you can use session_destroy function. The session_destroy function deletes everything that is stored in the current session.
How do you start a session in PHP?
Starting a PHP session A session is started with the session_start() function. Session variables are set with the PHP global variable: $_SESSION. Now, let’s create a new page called “demo_session1.php”.
Why is my PHP session data not being saved?
This is the most common cause of session data not being saved. It is also the easiest to fix. Basically, PHP’s session_start function MUST be called before any session data is saved or any output is sent to the browser. The role of this function is to start a new session or resume an existing one (if it exists).
When does session variable expire in PHP?
As we discussed, session information is shared between requests, and therefore session variables initialized on one page can also be accessed from other pages, until the session expires. Generally, a session expires when the browser is closed.
How to access a session after login in PHP?
Access the session on page 1 after logging in. Access the session on page 2 after logging in. Access the session on page 3 after logging in. We use session destroy for the entire session destroyed. This is used to log out. After logging out, the user cannot access other pages. The session is recommended to start the session at the beginning of each page.