Why is php not removing cookie set by javascript?

Question

There is post comment box on my site.

Posting comment is handled by javascript, js posts data to php script and php does the db related stuff and shows confirmation

Answer 1

You need to make sure the all the parameters (except name and time depending on the cookie.) are same while Setting Cookie in Javascript and while Removing Cookie in PHP

Parameters i.e. name,path (value and expire time can be different.)

for eg.

While setting cookie in javascript if you use it like this

document.cookie = id + "=" + input_text + " ; path=/";

you set the path to "/"

then while removing cookie in php you should specifically set like this.

//remove cookie.
setcookie($id, "", time()-36000 , "/");