/**
 *	get fields from wp-options
 */
function jcf_field_settings_get($id = '')
{
    $option_name = jcf_fields_get_option_name();
    $field_settings = get_option($option_name, array());
    if (!empty($id)) {
        return @$field_settings[$id];
    }
    return $field_settings;
}
/**
 *	get fields from wp-options
 */
function jcf_field_settings_get($id = '', $select_from_db = false)
{
    $option_name = jcf_fields_get_option_name();
    $jcf_read_settings = jcf_get_read_settings();
    if (empty($select_from_db) && $jcf_read_settings != JCF_CONF_SOURCE_DB) {
        $jcf_settings = jcf_get_all_settings_from_file();
        $post_type = str_replace('jcf_fields-', '', $option_name);
        $field_settings = $jcf_settings['field_settings'][$post_type];
    } else {
        $field_settings = jcf_get_options($option_name);
    }
    if (!empty($id)) {
        return @$field_settings[$id];
    }
    return $field_settings;
}
 /**
  * delete field from collection
  */
 public function delete_field($field_id)
 {
     $option_name = jcf_fields_get_option_name();
     $jcf_read_settings = jcf_get_read_settings();
     if ($jcf_read_settings != JCF_CONF_SOURCE_DB) {
         $jcf_settings = jcf_get_all_settings_from_file();
         $post_type = jcf_get_post_type();
         $fieldset = $jcf_settings['fieldsets'][$post_type][$this->fieldset_id];
         $field_settings = $jcf_settings['field_settings'][$post_type];
         if (isset($field_settings[$this->id]['fields'][$field_id])) {
             unset($field_settings[$this->id]['fields'][$field_id]);
         }
         $jcf_settings['fieldsets'][$post_type][$this->fieldset_id] = $fieldset;
         $jcf_settings['field_settings'][$post_type] = $field_settings;
         jcf_save_all_settings_in_file($jcf_settings);
     } else {
         $field_settings = jcf_get_options($option_name);
         if (isset($field_settings[$this->id]['fields'][$field_id])) {
             unset($field_settings[$this->id]['fields'][$field_id]);
         }
         jcf_update_options($option_name, $field_settings);
     }
 }