PHP Cookies

PHP Cookies Tutorial

PHP Cookies are small pieces of data stored on the user’s browser. It can create, read, and delete cookies to track user activity, preferences, or login information.

Setting a Cookie

Parameters of setcookie()

Parameter	Description
`name`	Name of the cookie
`value`	Value stored in the cookie
`expire`	Expiration time in seconds (`time() + seconds`)
`path`	Path on the server where cookie is available (`/` = entire website)
`domain`	Domain that can access the cookie
`secure`	`true` if HTTPS only
`httponly`	`true` to prevent JavaScript access (more secure)

Must call setcookie() before any HTML output.

Accessing a Cookie

Use $_COOKIE['name'] to access the cookie value.
Cookies are stored on the client-side, sent with each request.

Modifying a Cookie

To change a cookie, set it again with the same name and new value:

Deleting a Cookie

To delete a cookie, set its expiration time in the past:

Example: Complete Cookie Example

<?php
// Set cookie
setcookie("user", "Vipul", time() + 3600, "/");

// Check cookie
if(isset($_COOKIE["user"])) {
echo "Hello, " . $_COOKIE["user"] . "!<br>";
} else {
echo "Cookie not set.<br>";
}

// Delete cookie after some action
// setcookie("user", "", time() - 3600, "/");
?>

<?php

// Set cookie

setcookie("user", "Vipul", time() + 3600, "/");

// Check cookie

if(isset($_COOKIE["user"])) {

echo "Hello, " . $_COOKIE["user"] . "!<br>";

} else {

echo "Cookie not set.<br>";

}

// Delete cookie after some action

// setcookie("user", "", time() - 3600, "/");

Key Points

Cookies are store on the client browser.
Expire automatically after specified time.
Use $_COOKIE to read cookie values.
setcookie() must be call before any HTML output.
Can store user preferences, login info, or tracking data.

PHP Cookies

PHP Cookies Tutorial

Setting a Cookie

Accessing a Cookie

Modifying a Cookie

Deleting a Cookie

Example: Complete Cookie Example

Key Points

You may also like...

PHP Include Files

PHP Advanced Filters

PHP File Handling