WordPress at a glance
function is not described

wp_setcookie() WP 1.5.0

Deprecated in 2.5.0. It is no longer supported and can be removed in future releases. Use wp_set_auth_cookie() instead.

Sets a cookie for a user who just logged in. This function is deprecated.

  • See: wp_set_auth_cookie()

No Hooks.

Return

Nothing (null).

Usage

wp_setcookie( $username, $password, $already_md5, $home, $siteurl, $remember );
$username(string) (required)
The user's username
$password(string)
The user's password
Default: ''
$already_md5(true/false)
Whether the password has already been through MD5
Default: false
$home(string)
Will be used instead of COOKIEPATH if set
Default: ''
$siteurl(string)
Will be used instead of SITECOOKIEPATH if set
Default: ''
$remember(true/false)
Remember that the user is logged in
Default: false

Code of wp setcookie: wp-includes/pluggable-deprecated.php WP 5.2.2

<?php
function wp_setcookie($username, $password = '', $already_md5 = false, $home = '', $siteurl = '', $remember = false) {
	_deprecated_function( __FUNCTION__, '2.5.0', 'wp_set_auth_cookie()' );
	$user = get_user_by('login', $username);
	wp_set_auth_cookie($user->ID, $remember);
}