apply_filters( ‘allowed_options’, array $allowed_options )

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   Jules Colle 4 years ago

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   Example how to add allowed_options.

   (Adapted deprecated code by arnoutpullen)

   $sections = array(
       'section-one' => array(
           'option-one',
           'option-two'
       ),
       'section-two' => array(
           'option-one',
           'option-two'
       ),
   );
    
   add_filter('allowed_options', function($allowed_options) use ($sections) {
       foreach($sections as $section => $fields) {
           foreach($fields as $field) {
               $allowed_options[$section][] = $field;
           }
       }
       return $allowed_options;
   });