What Is a Session

Q

What Is a Session?

✍: FYIcenter

A

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.

2007-02-27, 6346👍, 0💬

Using Macros for Contants
What is the benefit of using #define to declare a constant? Using the #define method of declaring a constant enables you to declare a constant in one place and use it throughout your program. This helps make your programs more maintainable, because you need to maintain only the #define statement and... 2007-02-26, 7657👍, 0💬

Modulation Operations
Write an equivalent expression for x%8? x&7 2007-02-26, 7626👍, 0💬

Searching Date in Linked Lists
How can I search for data in a linked list? Unfortunately, the only way to search a linked list is with a linear search, because the only way a linked list's members can be accessed is sequentially. Sometimes it is quicker to take the data from a linked list and store it in a different data structur... 2007-02-26, 7559👍, 0💬

Number of Days between Two Dates
How can we know the number of days between two given dates in PHP? Simple arithmetic: <?php $date1 = date('Y-m-d'); $date2 = '2006-07-01'; $days = (strtotime($date1) - strtotime($date2)) / (60 * 60 * 24); $days = (int) $days; echo "Number of days since '2006-07-01': $days"; ?> 2007-02-27, 7404👍, 0💬

Persistent Cookies
What Is a Persistent Cookie? A persistent cookie is a cookie which is stored in a cookie file permanently on the browser's computer. By default, cookies are created as temporary cookies which stored only in the browser's memory. When the browser is closed, temporary cookies will be erased. You shoul... 2007-02-27, 6603👍, 0💬

What Is a Session
What Is a Session? 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 s... 2007-02-27, 6347👍, 0💬

What is PHP
What is PHP? The PHP Hypertext Preprocessor is a programming language that allows web developers to create dynamic content that interacts with databases. PHP is basically used for developing web based software applications. 2007-02-27, 6347👍, 0💬

define() - Defining Constants
How do you define a constant in PHP? You can define a constant by using the define() function. Once a constant is defined, it can never be changed or undefined. For example: <?php define("CONSTANT", "Hello world."); echo CONSTANT; // outputs "Hello world." echo Constant; // outputs "Constant"... 2007-02-27, 6341👍, 0💬

Differences between Simple Variables and Variable Variables
What is the difference between $message and $$message in PHP? $message is a simple variable with a fixed name which is called "message". $$message is a variable variable with a variable name which is stored in another variable called $message. If $message contains "user", $$message is the same as $u... 2007-02-27, 6214👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.