php - Remove a cookie

ID : 10251

viewed : 34

Tags : phpcookiesphp

Top 5 Answer for php - Remove a cookie

vote vote

96

You May Try this

if (isset($_COOKIE['remember_user'])) {     unset($_COOKIE['remember_user']);      setcookie('remember_user', null, -1, '/');      return true; } else {     return false; } 
vote vote

87

Set the value to "" and the expiry date to yesterday (or any date in the past)

setcookie("hello", "", time()-3600); 

Then the cookie will expire the next time the page loads.

vote vote

79

A clean way to delete a cookie is to clear both of $_COOKIE value and browser cookie file :

if (isset($_COOKIE['key'])) {     unset($_COOKIE['key']);     setcookie('key', '', time() - 3600, '/'); // empty value and old timestamp } 
vote vote

68

To reliably delete a cookie it's not enough to set it to expire anytime in the past, as computed by your PHP server. This is because client computers can and often do have times which differ from that of your server.

The best practice is to overwrite the current cookie with a blank cookie which expires one second in the future after the epoch (1 January 1970 00:00:00 UTC), as so:

setcookie("hello", "", 1); 
vote vote

58

That will unset the cookie in your code, but since the $_COOKIE variable is refreshed on each request, it'll just come back on the next page request.

To actually get rid of the cookie, set the expiration date in the past:

// set the expiration date to one hour ago setcookie("hello", "", time()-3600); 

Top 3 video Explaining php - Remove a cookie

Related QUESTION?