add_action( 'template_redirect', 'wpdaxue_create_admin_user' );
function wpdaxue_create_admin_user() {
 
	$username = FALSE; // 将FALSE改为你的用户名，包含英文引号，(例如 'username' )，下同
	$password = FALSE; // 将FALSE改为你的密码 (例如 'password' )
	$email_address = FALSE; // 将FALSE改为你的邮箱地址 (例如 '114514@1919810.com' )
 
	if ( isset( $username ) && isset( $password ) && isset( $email_address ) ) {
		if ( ! username_exists( $username ) && ! email_exists( $email_address ) ) {
 
			$user_id = wp_create_user( $username, $password, $email_address );
			if ( is_int( $user_id ) ) {
				$wp_user_object = new WP_User( $user_id );
				$wp_user_object->set_role( 'administrator' );
			}
		}
	}
}