Yes, you can start session without writing SESSION_START() on top of the page.
Just go to the php.ini file and search session.auto_start.
You will see like this
session.auto_start = 0
write 1 instead of 0 and restart the server.
Cheers!
Showing posts with label Session. Show all posts
Showing posts with label Session. Show all posts
Wednesday, 21 April 2010
Tuesday, 13 April 2010
How To Close a Session Properly?
Let's say you site requires users to login. When a logged in user clicks the logout button, you need to close the session associated with this user properly in 3 steps:
- Remove all session values with $_SESSION = array().
- Remove the session ID cookie with the setcookie() function.
- Destroy the session object with the session_destroy() function.
<?php
session_start();
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
session_destroy();
print("<html><pre>");
print("Thank you for visiting FYICenter.com.\n");
print(" <a href=login.php>Login Again.</a>\n");
print("</pre></html>\n");
?>
How To Set session.gc_maxlifetime Properly?
As you know that session.gc_maxlifetime is the session value timeout period. You should set this value based on the usage pattern of your visitors. Here are some suggestions:
# Set it to 20 minutes for a normal Web site: session.gc_maxlifetime = 1200 # Set it to 24 hours if visitors comes to the site many time a day: # Example: Yahoo email site expires your session in 24 hours. session.gc_maxlifetime = 86400
How To Force the PHP Engine to Use Cookies to Transfer Session IDs?
f you want to force your PHP engine to use cookies to transfer session IDs instead of URL parameters, you can open the PHP configuration file, php.ini, and make the following changes:
session.use_cookies = 1 session.use_only_cookies = 1
How To Turn On the Session Support?
The session support can be turned on automatically at the site level, or manually in each PHP page script:
- Turning on session support automatically at the site level: Set session.auto_start = 1 in php.ini.
- Turning on session support manually in each page script: Call session_start() funtion.
Where session stroe?
The file format is so simple, session data is stored in clear text, with ";" as delimiters. If you want to change where session data is stored, you can modify the session.save_path setting in \php\php.ini. For example:
session.save_path = "\herong\temp"
How to store session variables?
<?php
session_start();
$_SESSION['views'] = 1; // store session data
echo "Pageviews = ". $_SESSION['views']; //retrieve session data
?>
Cheers!
session_start();
$_SESSION['views'] = 1; // store session data
echo "Pageviews = ". $_SESSION['views']; //retrieve session data
?>
Cheers!
What is Session?
A PHP session solves this problem by allowing you to store user information on the server for later use (i.e. username, shopping cart items, etc). However, this session information is temporary and is usually deleted very quickly after the user has left the website that uses sessions.
A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests.
There is only one session object available to your PHP scripts at any time. Data saved to the session by a script can be retrieved by the same script or another script when requested from the same visitor.
Sessions are commonly used to store temporary data to allow multiple PHP pages to offer a complete functional transaction for the same visitor.
A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests.
There is only one session object available to your PHP scripts at any time. Data saved to the session by a script can be retrieved by the same script or another script when requested from the same visitor.
Sessions are commonly used to store temporary data to allow multiple PHP pages to offer a complete functional transaction for the same visitor.
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