Create an admin user programmatically in WordPress - wordpress

Question

Recently I had a client come to me to build a new website. They had also forgotten all their login details, but they did have FTP access.
How do you create an admin user programmatically in WordPress?

Answer 1

This will create an admin user if placed in a themes functions.php file. Please change the first three variables as needed.
/*
* Create an admin user silently
*/
add_action('init', 'xyz1234_my_custom_add_user');
function xyz1234_my_custom_add_user() {
$username = 'username123';
$password = 'pasword123';
$email = 'drew#example.com';
if (username_exists($username) == null && email_exists($email) == false) {
// Create the new user
$user_id = wp_create_user($username, $password, $email);
// Get current user object
$user = get_user_by('id', $user_id);
// Remove role
$user->remove_role('subscriber');
// Add role
$user->add_role('administrator');
}
}

Answer 2

Accepted answer has issues and will throw a fatal error when its run twice, because the $user_id will be empty the second time. A work around for the issue:
function rndprfx_add_user() {
$username = 'username123';
$password = 'azerty321';
$email = 'example#example.com';
if (username_exists($username) == null && email_exists($email) == false) {
$user_id = wp_create_user( $username, $password, $email );
$user = get_user_by( 'id', $user_id );
$user->remove_role( 'subscriber' );
$user->add_role( 'administrator' );
}
}
add_action('init', 'rndprfx_add_user');

Answer 3

Here is the queries to create a new admin user :
INSERT INTO wp_users (user_login, user_pass, user_nicename, user_email, user_status) VALUES ('newadmin', MD5('pass123'), 'firstname lastname', 'email#example.com', '0');
INSERT INTO wp_usermeta (umeta_id, user_id, meta_key, meta_value) VALUES (NULL, (Select max(id) FROM wp_users), 'wp_capabilities', 'a:1:{s:13:"administrator";s:1:"1";}');
INSERT INTO wp_usermeta (umeta_id, user_id, meta_key, meta_value) VALUES (NULL, (Select max(id) FROM wp_users), 'wp_user_level', '10');

Answer 4

Simply, you need to add this code sample in your functions.php:
function wpb_admin_account(){
$user = 'Username';
$pass = 'Password';
$email = 'email#domain.com';
if ( !username_exists( $user ) && !email_exists( $email ) ) {
$user_id = wp_create_user( $user, $pass, $email );
$user = new WP_User( $user_id );
$user->set_role( 'administrator' );
}
}
add_action('init','wpb_admin_account');
Do not forget to change Username, Password and Email by your own data.
here is more detailed tutorials that might help you.
How to create a new WordPress admin user programmatically