[WordPress] Initializing Default WordPress Options

00-default-options.php

<?php

public function set_options() {

  $this->options = array_merge(
    $this->get_default_options(),
    get_option( 'acme_options_example', array() )
  );
}

public function get_default_options() {

  $defaults = array(
    'social' => array(
      'twitter'   => '',
      'google'    => '',
      'instagram' => '',
    ),
    'web' => array(
      'site'  => '',
      'email' => '',
    )
  );
  
  return $defaults;
}