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COMPUTER SOFTWARE APPLICATION - CITS

Cookies in PHP

Using Cookies in PHP
What is a Cookie?
A cookie is often used to identify a user. A cookie is a small file that the server embeds on the user’s computer.
Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both
create and retrieve cookie values.
Create Cookies With PHP
A cookie is created with the setcookie() function.
Syntax

setcookie(name, value, expire, path, domain, secure, httponly);
Only the name parameter is required. All other parameters are optional
PHP Create/Retrieve a Cookie
The following example creates a cookie named “user” with the value “John Doe”. The cookie will expire after 30
days (86400 * 30). The “/” means that the cookie is available in entire website (otherwise, select the directory you
prefer).
We then retrieve the value of the cookie “user” (using the global variable $_COOKIE). We also use the isset()
function to find out if the cookie is set:
Example:

Delete a Cookie
To delete a cookie, use the setcookie() function with an expiration date in the past:
Example:

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CITS : IT&ITES - Computer Software Application - Lesson 47 - 62