The include (or require) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses ...

File handling is an important part of any web application. You often need to open and process a file for different tasks.

PHP 5 Session :    A session is a way to store information (in variables) to be used across multiple pages.

The PHP date() function is used to format a date and/or a time.

PHP - Multidimensional Arrays A multidimensional array is an array containing one or more arrays.