Category: Superglobals

One of the superglobal variables in PHP, $_SESSION is an associative array of session variables available in the current script. $HTTP_SESSION_VARS also contains the same information, but it is not a superglobal, and it has now been deprecated. What is a Session? A Session is an alternative way to make data accessible across the pages of an entire website.…

The PHP superglobal $_COOKIE stores the variables passed to the current PHP script along with the HTTP request in the form of cookies. $HTTP_COOKIE_VARS also contains the same information, but it is not a superglobal, and it has now been deprecated. What is a Cookie? Cookies are text files stored by a server on the…

$_ENV is a superglobal variable in PHP. It is an associative array that stores all the environment variables available in the current script. $HTTP_ENV_VARS also contains the same information, but it is not a superglobal, and it has now been deprecated. The environment variables are imported into the global namespace. Most of these variables are provided by the…

$_FILES is one of the ‘superglobal’, or automatic global, variables in PHP. It is available in all scopes throughout a script. The variable $_FILES is an associative array containing items uploaded via HTTP POST method. A file is uploaded when a HTML form contains an input element with a file type, its enctype attribute set…

$_GET is one of the superglobals in PHP. It is an associative array of variables passed to the current script via the query string appended to the URL of HTTP request. Note that the array is populated by all requests with a query string in addition to GET requests. $HTTP_GET_VARS contains the same initial information,…

The $_POST variable in PHP is a super global array that collects form data after submitting an HTML form using the POST method. It is particularly useful for securely sending data and receiving user input. What is $_POST? $_POST is a built-in PHP array. It stores data received from an HTML form using the POST…

PHP uses a special variable called $_REQUEST to collect data from forms. It can save data sent using GET, POST or COOKIE methods. This makes it easy to get user input and removes the need to think about how the data is transmitted. The $_REQUEST operates according to the parameters in the “php.ini” file, including…

The $_SERVER is a superglobal in PHP. It includes information about HTTP headers, path, script location, and other things. It is an associative array that contains information about the execution environment and server. The majority of these details are filled in by the web server and each server may have different entries. When running PHP scripts from the command…

$GLOBALS is one of the “superglobal” or “automatic global” variables in PHP. It is available in all scopes throughout a script. There is no need to do “global $variable;” to access it within functions or methods. $GLOBALS is an associative array of references to all globally defined variables. The names of variables form keys and…

One of the superglobal variables in PHP, $_SESSION is an associative array of session variables available in the current script. $HTTP_SESSION_VARS also contains the same information, but it is not a superglobal, and it has now been deprecated. What is a Session? A Session is an alternative way to make data accessible across the pages of an entire website.…