PHP Super Globals Demystified! : скачать в хорошем качестве

PHP Super Globals Demystified! :

Introduction: PHP is a server-side scripting language that is widely used to develop web applications. It is known for its ease of use, speed, and flexibility. One of the most powerful features of PHP is its ability to use superglobal variables. Superglobal variables are variables that are accessible from anywhere in the script, regardless of scope or location. They are automatically created by PHP and contain information about the web server, client, and other important data. In this article, we will explore PHP superglobal variables in detail. What are PHP Superglobal Variables? Superglobal variables in PHP are predefined variables that are available to all scripts running on the server. They are automatically created by PHP and contain important information about the web server, client, and other variables. Superglobal variables can be accessed from any function, class, or file within the script without the need for any special declaration or import. There are nine superglobal variables in PHP, which are: $GLOBALS $_SERVER $_GET $_POST $_FILES $_COOKIE $_SESSION $_REQUEST $_ENV Each of these variables serves a different purpose and contains different types of data. $GLOBALS: The $GLOBALS variable is a superglobal array that contains all the global variables in the script. It is used to access variables from any part of the script, including within functions or classes. The $GLOBALS array is automatically created by PHP and is always available. $_SERVER: The $_SERVER variable is a superglobal array that contains information about the web server and the client's browser. It contains information such as the server's IP address, the client's IP address, the browser's user-agent string, and other important data. The $_SERVER array is automatically created by PHP and is always available. $_GET: The $_GET variable is a superglobal array that contains data that is passed to the script via the HTTP GET method. It is used to retrieve data from the URL, such as query string parameters. The $_GET array is automatically created by PHP and is always available. $_POST: The $_POST variable is a superglobal array that contains data that is passed to the script via the HTTP POST method. It is used to retrieve data from HTML forms or other sources that use the POST method. The $_POST array is automatically created by PHP and is always available. $_FILES: The $_FILES variable is a superglobal array that contains information about uploaded files. It is used to retrieve information such as the name, type, size, and location of the uploaded file. The $_FILES array is automatically created by PHP and is always available. $_COOKIE: The $_COOKIE variable is a superglobal array that contains information about cookies. Cookies are small text files that are stored on the client's browser and are used to store data that can be accessed by the server. The $_COOKIE array is automatically created by PHP and is always available. $_SESSION: The $_SESSION variable is a superglobal array that contains session data. Sessions are used to store data that can be accessed by multiple pages or scripts within a website. The $_SESSION array is automatically created by PHP and is always available. $_REQUEST: The $_REQUEST variable is a superglobal array that contains data that is passed to the script via the HTTP GET or POST methods. It is used to retrieve data from both methods and is a combination of the $_GET and $_POST arrays. The $_REQUEST array is automatically created by PHP and is always available. $_ENV: The $_ENV variable is a superglobal array that contains information about the environment in which the script is running. It is used to retrieve information such as the operating system, web server software, and other environment variables For Code: https://github.com/Umii010/PHP-Lectures Quora Profile: https://www.quora.com/profile/UmerSha... Do Like Subscribe and Share with Your Friends Keep Learning and Keep Exploring!!!!!