public static function normalize( $field ) {
$field = wp_parse_args( $field, array(
'id' => '',
'name' => '',
'multiple' => false,
'std' => '',
'desc' => '',
'format' => '',
'before' => '',
'after' => '',
'field_name' => isset( $field['id'] ) ? $field['id'] : '',
'placeholder' => '',
'clone' => false,
'max_clone' => 0,
'sort_clone' => false,
'class' => '',
'disabled' => false,
'required' => false,
'attributes' => array(),
) );
return $field;
}