What are the best practices for setting and accessing cookies in PHP?

When setting and accessing cookies in PHP, it is important to follow best practices to ensure security and efficiency. To set a cookie, use the `setcookie()` function with the appropriate parameters such as the cookie name, value, expiration time, path, and domain. To access a cookie, simply use the `$_COOKIE` superglobal array. 

// Set a cookie with name 'user' and value 'John Doe' that expires in 1 hour
setcookie('user', 'John Doe', time() + 3600, '/');
```

```php
// Access the 'user' cookie value
if(isset($_COOKIE['user'])) {
    $user = $_COOKIE['user'];
    echo "Welcome back, $user!";
} else {
    echo "Cookie not set.";
}

Keywords

setcookie $_COOKIE secure HttpOnly expiration

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