Skip to main content

How to change the session timeout in PHP

Session timeout is a notion that has to be implemented in code if you want strict guarantees; that's the only way you can be absolutely certain that no session ever will survive after X minutes of inactivity.

If relaxing this requirement a little is acceptable and you are fine with placing a lower bound instead of a strict limit to the duration, you can do so easily and without writing custom logic.

Convenience in relaxed environments: how and why

If your sessions are implemented with cookies (which they probably are), and if the clients are not malicious, you can set an upper bound on the session duration by tweaking certain parameters. If you are using PHP's default session handling with cookies, setting session.gc_maxlifetime along with session_set_cookie_params should work for you like this:


// server should keep session data for AT LEAST 1 hour 

ini_set('session.gc_maxlifetime', 3600); 

 // each client should remember their session id for EXACTLY 1 hour
session_set_cookie_params(3600); 

session_start(); // ready to go!


Comments

Popular posts from this blog

Symbols Used in Excel Formula | The purpose of Symbols in Excel Formula

Following symbols are used in Excel Formula. They will perform different actions in Excel Formulas and Functions. Each of these special characters have used for different purpose in Excel. Symbol Name Description = Equal to Every Excel Formula begins with Equal to symbol (=). Example: = B1+B6 () Parentheses All Arguments of the Excel Functions specified between the Parentheses. Example: =COUNTIF ( B1:B5,5 ) () Parentheses Expressions specified in the Parentheses will be evaluated first. Parentheses changes the order of the evaluation in Excel Formula. Example:   =25+ ( 35*2 ) +5 * Asterisk Wild card operator to to denote all values in a List. Example:   =COUNTIF(B1:B5,” * “) , Comma List of the Arguments of a Function Separated by Comma in Excel Formula. Example:   =COUNTIF(B1:B5 , “>” &C1) & Ampersand Concatenate Operator to connect two strings into one in Excel Formula. Example:   =”Total: “ & SUM(C2:C25) $ Dollar Makes Cell Reference as Absolute in Excel Formula. Exam

How to create a Barcode Using PHP Barcode 128 Generator

A barcode is an optical, machine-readable, representation of data, the data usually describes something about the object that carries the barcode.We will use PHP to generate Barcode in this tutorial. In this script, we are using coding which will generate barcodes in barcode format Code 128 . First, we will create index.php which will ask for the user input for which Barcode has to be created PHP Barcode Generator <fieldset><legend>Detail Informations</legend><form action="createbarcode.php" method="post"><b>Enter Your Code </b><input name="barcode" type="text" /><input type="submit" value="Create Barcode" /></form></fieldset> Now we will create createbarcode.php which will call function from Barcode code128 class for creating barcode <? php include('barcode128.php'); // include php barcode 128 class // design our barcode display echo

How to change a MySQL database’s table prefix

Changing a database table prefix is easy and here’s the simple step-by-step guide! For WordPress installations, it’s essential! How to change a prefix 1. In your text editor, change database_name, old_prefix_ and new_prefix_ to the required values: SET @database = "database_name"; SET @old_prefix = "old_prefix_"; SET @new_prefix = "new_prefix_"; SELECT concat( "RENAME TABLE ", TABLE_NAME, " TO ", replace(TABLE_NAME, @old_prefix, @new_prefix), ';' ) AS "SQL"  FROM information_schema.TABLES WHERE TABLE_SCHEMA = @database; 2. Run the query in cPanel or PHPMyAdmin on your WordPress database 3. The output will be a series of SQL queries that will rename the tables for you 4. Run the output 5. Done!   How to add a prefix    If your database doesn’t have a prefix at all, follow the steps above but use the below query that’s been slightly modified fo