Set and retrieve cookies with php

The format for setting a cookie in php is as follows:

setcookie(name, value, expire, path, domain, security);

I only use the name, value and expire, where expire is in seconds, so;
time() + 24*60*60 is 1 day.



The following will set a basic cookie with php that will expire in 7 days:

<?php
setcookie("Key", "Value", time()+7*24*60*60);  
?>

The following will check if said cookie has been set:

<?php

if(isset($_COOKIE["Key"]))
{
//do something
}
else
{
// do something else
}

?>

The following will display the cookie:

<?php
echo "Key Value is  " . $_COOKIE["Key"]; 
?>

To delete the cookie, we follow the same format as setting the cookie, however we don't add a value (leave it blank) and we set the expiry time in the past.

The following will delete the cookie:

<?php
setcookie("Key", "", time()-60);  

?>


Ref: https://www.geeksforgeeks.org/php-cookies/