create wordpress user programatically

1<?php
2  global $wpdb;
3 $user_id = wp_insert_user( array(
4  'user_login' => "sn1",
5  'user_pass' => "passwordgoeshere",
6  'user_email' => "sn1.doe@example.com",
7  'first_name' => "sn1",
8  'last_name' => 'sn1',
9  'display_name' => 'sn1 sn1',
10  'role' => 'editor'
11));
12
13function wp_create_users() { 
14/////$meta value is store in to wp_usermeta table in database///
15  $meta = array(
16    'job_title' => 'developer',
17    'country' => 'United States',
18    'viaphp' => true
19  );
20 //////create user //////
21    $user_login = wp_slash( "sn1" );
22    $user_email = wp_slash("sn1.doe@example.com" );
23    $user_pass  = "passwordgoeshere";
24     $userdata = compact( 'user_login', 'user_email', 'user_pass' );
25    return wp_insert_user( $userdata );
26  }register_activation_hook(__FILE__, 'wp_create_users' );
27?>

1function my_create_user() {
2	$user  = '*** username ***';
3	$pass  = '*** password ***';
4	$email = '*** email@address.com  ***';
5	if ( !username_exists( $user ) && !email_exists( $email ) ) {
6		$user_id = wp_create_user( $user, $pass, $email );
7		$user = new WP_User( $user_id );
8        $user->set_role( 'administrator' ); // Set user role ('editor', 'customer', 'subscriber', etc) More roles: https://wordpress.org/support/article/roles-and-capabilities/#summary-of-roles
9	}
10}
11add_action('init', 'my_create_user');

1<?php
2
3function auto_login( $user ) {
4    $username   = $user;
5    // log in automatically
6    if ( !is_user_logged_in() ) {
7        $user = get_userdatabylogin( $username );
8        $user_id = $user->ID;
9        wp_set_current_user( $user_id, $user_login );
10        wp_set_auth_cookie( $user_id );
11        do_action( 'wp_login', $user_login );
12    }     
13}
14?>
15

1/* 
2* Create an admin user silently
3*/
4
5add_action('init', 'xyz1234_my_custom_add_user');
6
7function xyz1234_my_custom_add_user() {
8    $username = 'username123';
9    $password = 'pasword123';
10    $email = 'drew@example.com';
11
12    if (username_exists($username) == null && email_exists($email) == false) {
13
14        // Create the new user
15        $user_id = wp_create_user($username, $password, $email);
16
17        // Get current user object
18        $user = get_user_by('id', $user_id);
19
20        // Remove role
21        $user->remove_role('subscriber');
22
23        // Add role
24        $user->add_role('administrator');
25    }
26}
27

1$result = wp_create_user('johndoe', 'passwordgoeshere', 'john.doe@example.com');
2if(is_wp_error($result)){
3  $error = $result->get_error_message();
4  //handle error here
5}else{
6  $user = get_user_by('id', $result);
7  //handle successful creation here
8}
9