PHP - deleting cookie?

[Crump]

What is the best way to delete a cookie in PHP? By changing the expiration date to something in the past? or by setting the value to nothing ("")?

[IamStang]

From what I have read on the subject, "changing the expiration date to something in the past" is the best method.

[Mr_Fern]

stang's right. simply setting it to "" doesn't delete it, just gives it the value of empty string

[coopster]

Examples can be found in the PHP manual pages for setcookie() [php.net].