How to Delete All Cookies Associated with a Specific Domain in PHP?

How Can I Remove All Cookies of a Specific Domain with PHP?

When a user logs out of a website, it's often desirable to delete all the cookies associated with that website. Unfortunately, using the setcookie() function to set a cookie to false isn't effective for this purpose.

Solution: Using PHP setcookie()

To remove all cookies associated with a specific domain, use the following PHP code:

<code class="php">// unset cookies
if (isset($_SERVER['HTTP_COOKIE'])) {
    $cookies = explode(';', $_SERVER['HTTP_COOKIE']);
    foreach($cookies as $cookie) {
        $parts = explode('=', $cookie);
        $name = trim($parts[0]);
        setcookie($name, '', time()-1000);
        setcookie($name, '', time()-1000, '/');
    }
}</code>

This code retrieves the HTTP cookies for the current request, splits them into individual key-value pairs, and for each key, it sets the value to an empty string and expires the cookie using time()-1000. Additionally, it sets the cookie path to "/", ensuring it affects all paths on the domain.

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