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.
How to Create a Cookie?
The setcookie() function is used to set a cookie.
Note: The setcookie() function must appear BEFORE the <html> tag.
Syntax
setcookie(name, value, expire, path, domain);
Example
<?php
setcookie("user", "Alex Porter", time()+3600);
?>
setcookie("user", "Alex Porter", time()+3600);
?>
How to Retrieve a Cookie Value?
The PHP $_COOKIE variable is used to retrieve a cookie value.
In the example below, we retrieve the value of the cookie named "user" and display it on a page:
In the example below, we retrieve the value of the cookie named "user" and display it on a page:
<?php
// Print a cookie
echo $_COOKIE["user"];
// A way to view all cookies
print_r($_COOKIE);
?>
// Print a cookie
echo $_COOKIE["user"];
// A way to view all cookies
print_r($_COOKIE);
?>
How to Delete a Cookie?
When deleting a cookie you should assure that the expiration date is in the past.
Delete example:
<?php
// set the expiration date to one hour ago
setcookie("user", "", time()-3600);
?> by sanseep
// set the expiration date to one hour ago
setcookie("user", "", time()-3600);
?> by sanseep
