Новое поле+сортировка по нему - [VM1] Модификации и хаки

/* OrderByFields */
global $VM_BROWSE_ORDERBY_FIELDS;
$VM_BROWSE_ORDERBY_FIELDS = array( 'product_name','product_price','product_sku','product_cod_sortirovki' );

        <td class="labelcell"><?php echo $VM_LANG->_('VM_BROWSE_ORDERBY_DEFAULT_FIELD_LBL')?></td>
        <td>
                <select class="inputbox" name="conf_VM_BROWSE_ORDERBY_FIELD">
                        <option value="product_list" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_list') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_DEFAULT')?></option>
                        <option value="product_name" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_name') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_NAME_TITLE')?></option>
                        <option value="product_price" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_price') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_PRICE_TITLE')?></option>
                        <option value="product_sku" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_sku') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_CART_SKU')?></option>
                        <option value="product_cdate" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_cdate') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_LATEST')?></option>
                        <option value="product_cod_sortirovki" <?php if (@VM_BROWSE_ORDERBY_FIELD == 'product_cod_cortirovki') echo "selected=\"selected\""; ?>><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_COD_SORTIROVKI')?></option>
           
            </select>
        </td>
        <td><?php echo vmToolTip( $VM_LANG->_('VM_BROWSE_ORDERBY_DEFAULT_FIELD_LBL_TIP') )?></td>
    </tr>
    <tr>
        <td class="labelcell"><?php echo $VM_LANG->_('VM_BROWSE_ORDERBY_FIELDS_LBL')?></td>
        <td>
                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_list" <?php if (in_array( 'product_list', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS0" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS0"><?php echo $VM_LANG->_('PHPSHOP_DEFAULT');?></label><br />

                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_name" <?php if (in_array( 'product_name', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS1" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS1"><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_NAME_TITLE')?></label><br />
            
                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_price" <?php if (in_array( 'product_price', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS2" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS2"><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_PRICE_TITLE')?></label><br />

                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_cdate" <?php if (in_array( 'product_cdate', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS3" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS3"><?php echo $VM_LANG->_('PHPSHOP_LATEST')?></label><br />

                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_sku" <?php if (in_array( 'product_sku', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS4" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS4"><?php echo $VM_LANG->_('PHPSHOP_CART_SKU')?></label><br />
                        
                        <input name="conf_VM_BROWSE_ORDERBY_FIELDS[]" type="checkbox" value="product_cod_sortirovki" <?php if (in_array( 'product_cod_sortirovki', $VM_BROWSE_ORDERBY_FIELDS )) echo "checked=\"checked\""; ?> id="conf_VM_BROWSE_ORDERBY_FIELDS4" />
                        <label for="conf_VM_BROWSE_ORDERBY_FIELDS4"><?php echo $VM_LANG->_('PHPSHOP_PRODUCT_COD_SORTIROVKI')?></label>
                        
        </td>
        <td><?php echo vmToolTip( $VM_LANG->_('VM_BROWSE_ORDERBY_FIELDS_LBL_TIP') )?></td>
    </tr>

    'PHPSHOP_PRODUCT_COD_SORTIROVKI' => 'Код сортировки',

<?php if( !defined( '_VALID_MOS' ) && !defined( '_JEXEC' ) ) die( 'Direct Access to '.basename(__FILE__).' is not allowed.' ); ?>


<?php echo $VM_LANG->_('PHPSHOP_ORDERBY')?>: 
<select class="inputbox" name="orderby" onchange="order.submit()">
<option value="product_name" ><?php echo $VM_LANG->_('PHPSHOP_SELECT')?></option>
<?php
//SORT BY COD SORTIROVKI
if( in_array( 'product_cod_sortirovki', $VM_BROWSE_ORDERBY_FIELDS)) { ?>
        <option value="product_cod_sortirovki" <?php echo $orderby=="product_cod_sortirovki" ? "selected=\"selected\"" : "";?>>
        <?php echo 'Код сортировки' ?></option>
        <?php
}
// SORT BY PRODUCT NAME
if( in_array( 'product_name', $VM_BROWSE_ORDERBY_FIELDS)) { ?>
        <option value="product_name" <?php echo $orderby=="product_name" ? "selected=\"selected\"" : "";?>>
        <?php echo $VM_LANG->_('PHPSHOP_PRODUCT_NAME_TITLE')?></option>
<?php
}
// SORT BY PRODUCT SKU
if( in_array( 'product_sku', $VM_BROWSE_ORDERBY_FIELDS)) { ?>
        <option value="product_sku" <?php echo $orderby=="product_sku" ? "selected=\"selected\"" : "";?>>
        <?php echo $VM_LANG->_('PHPSHOP_CART_SKU')?></option>
        <?php
}
// SORT BY PRODUCT PRICE
  if (_SHOW_PRICES == '1' && $auth['show_prices'] && in_array( 'product_price', $VM_BROWSE_ORDERBY_FIELDS)) { ?>
                <option value="product_price" <?php echo $orderby=="product_price" ? "selected=\"selected\"" : "";?>>
        <?php echo $VM_LANG->_('PHPSHOP_PRODUCT_PRICE_TITLE')?></option>
        <?php 
  } 
  // SORT BY PRODUCT CREATION DATE
if( in_array( 'product_cdate', $VM_BROWSE_ORDERBY_FIELDS)) { ?>
        <option value="product_cdate" <?php echo $orderby=="product_cdate" ? "selected=\"selected\"" : "";?>>
        <?php echo $VM_LANG->_('PHPSHOP_LATEST')?></option>
        <?php
}


?>
</select>