How to delete cookie on codeigniter

Question

I do not know how to delete a cookie. I want when I submit the form. The cookie is also deleted. I am trying to delete_cookie ("name") but it does not work. I think because cookie I created javascript . Please check my code to fix this problem.

This is my text box:

 <input name="cargo_no" type="text" class="validate[required]" id="cargonumber" onchange="setCookie('cargonumberC', this.value, 365);"/> 

and this is javascript

 function setCookie(cookieName, cookieValue, nDays) { var today = new Date(); var expire = new Date(); if (!nDays) nDays=1; expire.setTime(today.getTime() + 3600000*24*nDays); document.cookie = cookieName+"="+escape(cookieValue) + ";expires="+expire.toGMTString(); } function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i = 0; i < ca.length; i++) { var c = ca[i]; while (c.charAt(0) == ' ') c = c.substring(1, c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length); } return null; } document.addEventListener('DOMContentLoaded', function() { var themeSelect = document.getElementById('cargonumber'); var selectedTheme = readCookie('cargonumberC'); if (selectedTheme) { themeSelect.value = selectedTheme; } }); 

Answer 1

Using Codeigniter, put it in the save method of your controller:

Try:

 delete_cookie('name', $domain, $path); 

Answer 2

You can remove the cookie from CodeIgniter. Use a cookie helper like

 $this->load->helper('cookie'); delete_cookie("name"); 

Answer 3

You cannot delete the cookie. Browser (or user) to delete cookies. But you can force the browser to automatically delete the cookie by setting the cookie expiration date to a past date. Here is a javascript example.

 function deleteCookie(cookieName, cookieValue) { document.cookie = cookieName+"="+escape(cookieValue) + ";expires=Thu, 01 Jan 1970 00:00:01 GMT;"; }