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SESSION, COOKIES, and VARIABLES in PHP

October 30, 2013
  1. A PHP session variable is used to store information about, or change settings for a user session
  2. Cookies are a mechanism for storing data in the remote browser and thus tracking or identifying return users
  3. A variable is a holder for a type of data. So, based on its type, a variable can hold numbers, strings, booleans, objects, resources or it can be NULL.

must always be declared when accessing anything about session

session_start();

initializes the value of the session

$_SESSION[‘nameSession’] = ‘value’;

desplays the value in the session

echo $_SESSION[‘nameSession’];

deletes all sessions 

session_destroy();

another way to destroy sessions is

$_SESSION = array();

———————————————————-

set a cookie 

setcookie(‘nameCookie’, ‘value’, time() + (60*60*60*7));

displays the value of the cookie

echo $_COOKIE[‘nameCookie’];

———————————————————-

set the value

$varName = ‘value’;

the variable exists in the whole document

Global $varGlobalName;

$varGlobalName = ‘value’;

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From → Discussion, PHP

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