What is the difference between the format required by DateTime::COOKIE and the format required by setcookie in PHP?

The main difference between the format required by DateTime::COOKIE and the format required by setcookie in PHP is that DateTime::COOKIE returns a string representation of the date and time in the format specified by RFC 850 (e.g. "Monday, 01-Jan-70 00:00:00 UTC"), while setcookie requires the expiration time to be in Unix timestamp format (e.g. time() + 3600 for one hour in the future). To convert DateTime::COOKIE format to Unix timestamp format for use with setcookie, you can use the strtotime() function in PHP. 

// Get the expiration time in DateTime::COOKIE format
$cookieExpiration = (new DateTime())->format(DateTime::COOKIE);

// Convert DateTime::COOKIE format to Unix timestamp format
$unixTimestamp = strtotime($cookieExpiration);

// Set the cookie with the converted expiration time
setcookie("cookie_name", "cookie_value", $unixTimestamp);

Keywords

DateTime::COOKIE setcookie format difference PHP

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