product.lib.php

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<?php
/* Copyright (C) 2006-2015  Laurent Destailleur     <eldy@users.sourceforge.net>
 * Copyright (C) 2007       Rodolphe Quiedeville    <rodolphe@quiedeville.org>
 * Copyright (C) 2009-2010  Regis Houssin           <regis.houssin@inodbox.com>
 * Copyright (C) 2015       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
 * Copyright (C) 2015-2016  Marcos García     <marcosgdf@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 * or see https://www.gnu.org/
 */

function product_prepare_head($object)
{
  global $db, $langs, $conf, $user;
  $langs->load("products");

  $label = $langs->trans('Product');
  if ($object->isService()) $label = $langs->trans('Service');

  $h = 0;
  $head = array();

  $head[$h][0] = DOL_URL_ROOT."/product/card.php?id=".$object->id;
  $head[$h][1] = $label;
  $head[$h][2] = 'card';
  $h++;

  if (!empty($object->status))
  {
    $head[$h][0] = DOL_URL_ROOT."/product/price.php?id=".$object->id;
    $head[$h][1] = $langs->trans("SellingPrices");
    $head[$h][2] = 'price';
    $h++;
  }

  if (!empty($object->status_buy) || (!empty($conf->margin->enabled) && !empty($object->status)))   // If margin is on and product on sell, we may need the cost price even if product os not on purchase
  {
    if (((!empty($conf->fournisseur->enabled) && empty($conf->global->MAIN_USE_NEW_SUPPLIERMOD) || !empty($conf->supplier_order->enabled) || !empty($conf->supplier_invoice->enabled)) && $user->rights->fournisseur->lire)
    || (!empty($conf->margin->enabled) && $user->rights->margin->liretous)
    )
    {
      $head[$h][0] = DOL_URL_ROOT."/product/fournisseurs.php?id=".$object->id;
      $head[$h][1] = $langs->trans("BuyingPrices");
      $head[$h][2] = 'suppliers';
      $h++;
    }
  }

  // Multilangs
  if (!empty($conf->global->MAIN_MULTILANGS))
  {
    $head[$h][0] = DOL_URL_ROOT."/product/traduction.php?id=".$object->id;
    $head[$h][1] = $langs->trans("Translation");
    $head[$h][2] = 'translation';
    $h++;
  }

  // Sub products
  if (!empty($conf->global->PRODUIT_SOUSPRODUITS))
  {
    $head[$h][0] = DOL_URL_ROOT."/product/composition/card.php?id=".$object->id;
    $head[$h][1] = $langs->trans('AssociatedProducts');

    $nbFatherAndChild = $object->hasFatherOrChild();
    if ($nbFatherAndChild > 0) $head[$h][1] .= '<span class="badge marginleftonlyshort">'.$nbFatherAndChild.'</span>';
    $head[$h][2] = 'subproduct';
    $h++;
  }

  if (!empty($conf->variants->enabled) && ($object->isProduct() || $object->isService())) {
    global $db;

    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductCombination.class.php';

    $prodcomb = new ProductCombination($db);

    if ($prodcomb->fetchByFkProductChild($object->id) <= 0)
    {
      $head[$h][0] = DOL_URL_ROOT."/variants/combinations.php?id=".$object->id;
      $head[$h][1] = $langs->trans('ProductCombinations');
      $head[$h][2] = 'combinations';
      $nbVariant = $prodcomb->countNbOfCombinationForFkProductParent($object->id);
      if ($nbVariant > 0) $head[$h][1] .= '<span class="badge marginleftonlyshort">'.$nbVariant.'</span>';
    }

    $h++;
  }

  if ($object->isProduct() || ($object->isService() && !empty($conf->global->STOCK_SUPPORTS_SERVICES)))    // If physical product we can stock (or service with option)
  {
    if (!empty($conf->stock->enabled) && $user->rights->stock->lire)
    {
      $head[$h][0] = DOL_URL_ROOT."/product/stock/product.php?id=".$object->id;
      $head[$h][1] = $langs->trans("Stock");
      $head[$h][2] = 'stock';
      $h++;
    }
  }

  // Tab to link resources
  if (!empty($conf->resource->enabled))
  {
    if ($object->isProduct() && !empty($conf->global->RESOURCE_ON_PRODUCTS))
    {
      $head[$h][0] = DOL_URL_ROOT.'/resource/element_resource.php?element=product&ref='.$object->ref;
      $head[$h][1] = $langs->trans("Resources");
      $head[$h][2] = 'resources';
      $h++;
    }
    if ($object->isService() && !empty($conf->global->RESOURCE_ON_SERVICES))
    {
      $head[$h][0] = DOL_URL_ROOT.'/resource/element_resource.php?element=service&ref='.$object->ref;
      $head[$h][1] = $langs->trans("Resources");
      $head[$h][2] = 'resources';
      $h++;
    }
  }

  $head[$h][0] = DOL_URL_ROOT."/product/stats/facture.php?showmessage=1&id=".$object->id;
  $head[$h][1] = $langs->trans('Referers');
  $head[$h][2] = 'referers';
  $h++;

  $head[$h][0] = DOL_URL_ROOT."/product/stats/card.php?id=".$object->id;
  $head[$h][1] = $langs->trans('Statistics');
  $head[$h][2] = 'stats';
  $h++;

  // Show more tabs from modules
  // Entries must be declared in modules descriptor with line
  // $this->tabs = array('entity:+tabname:Title:@mymodule:/mymodule/mypage.php?id=__ID__');   to add new tab
  // $this->tabs = array('entity:-tabname);                           to remove a tab
  complete_head_from_modules($conf, $langs, $object, $head, $h, 'product');

  // Notes
  if (empty($conf->global->MAIN_DISABLE_NOTES_TAB))
  {
    $nbNote = 0;
    if (!empty($object->note_private)) $nbNote++;
    if (!empty($object->note_public)) $nbNote++;
    $head[$h][0] = DOL_URL_ROOT.'/product/note.php?id='.$object->id;
    $head[$h][1] = $langs->trans('Notes');
    if ($nbNote > 0) $head[$h][1] .= '<span class="badge marginleftonlyshort">'.$nbNote.'</span>';
    $head[$h][2] = 'note';
    $h++;
  }

  // Attachments
  require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
  require_once DOL_DOCUMENT_ROOT.'/core/class/link.class.php';
  if (!empty($conf->product->enabled) && ($object->type == Product::TYPE_PRODUCT)) $upload_dir = $conf->product->multidir_output[$object->entity].'/'.dol_sanitizeFileName($object->ref);
  if (!empty($conf->service->enabled) && ($object->type == Product::TYPE_SERVICE)) $upload_dir = $conf->service->multidir_output[$object->entity].'/'.dol_sanitizeFileName($object->ref);
  $nbFiles = count(dol_dir_list($upload_dir, 'files', 0, '', '(\.meta|_preview.*\.png)$'));
  if (!empty($conf->global->PRODUCT_USE_OLD_PATH_FOR_PHOTO)) {
    if (!empty($conf->product->enabled) && ($object->type == Product::TYPE_PRODUCT)) $upload_dir = $conf->product->multidir_output[$object->entity].'/'.get_exdir($object->id, 2, 0, 0, $object, 'product').$object->id.'/photos';
    if (!empty($conf->service->enabled) && ($object->type == Product::TYPE_SERVICE)) $upload_dir = $conf->service->multidir_output[$object->entity].'/'.get_exdir($object->id, 2, 0, 0, $object, 'product').$object->id.'/photos';
    $nbFiles += count(dol_dir_list($upload_dir, 'files', 0, '', '(\.meta|_preview.*\.png)$'));
  }
  $nbLinks = Link::count($db, $object->element, $object->id);
  $head[$h][0] = DOL_URL_ROOT.'/product/document.php?id='.$object->id;
  $head[$h][1] = $langs->trans('Documents');
  if (($nbFiles + $nbLinks) > 0) $head[$h][1] .= '<span class="badge marginleftonlyshort">'.($nbFiles + $nbLinks).'</span>';
  $head[$h][2] = 'documents';
  $h++;

  complete_head_from_modules($conf, $langs, $object, $head, $h, 'product', 'remove');

  // Log
  $head[$h][0] = DOL_URL_ROOT.'/product/agenda.php?id='.$object->id;
  $head[$h][1] = $langs->trans("Events");
  if (!empty($conf->agenda->enabled) && (!empty($user->rights->agenda->myactions->read) || !empty($user->rights->agenda->allactions->read)))
  {
    $head[$h][1] .= '/';
    $head[$h][1] .= $langs->trans("Agenda");
  }
  $head[$h][2] = 'agenda';
  $h++;

  return $head;
}

function productlot_prepare_head($object)
{
  global $db, $langs, $conf, $user;

  // Load translation files required by the page
  $langs->loadLangs(array("products", "productbatch"));

  $h = 0;
  $head = array();

  $head[$h][0] = DOL_URL_ROOT."/product/stock/productlot_card.php?id=".$object->id;
  $head[$h][1] = $langs->trans("Lot");
  $head[$h][2] = 'card';
  $h++;

  // Attachments
  require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
  require_once DOL_DOCUMENT_ROOT.'/core/class/link.class.php';
  $upload_dir = $conf->productbatch->multidir_output[$object->entity].'/'.dol_sanitizeFileName($object->ref);
  $nbFiles = count(dol_dir_list($upload_dir, 'files', 0, '', '(\.meta|_preview.*\.png)$'));
  $nbLinks = Link::count($db, $object->element, $object->id);
  $head[$h][0] = DOL_URL_ROOT."/product/stock/productlot_document.php?id=".$object->id;
  $head[$h][1] = $langs->trans("Documents");
  if (($nbFiles + $nbLinks) > 0) $head[$h][1] .= '<span class="badge marginleftonlyshort">'.($nbFiles + $nbLinks).'</span>';
  $head[$h][2] = 'documents';
  $h++;

  // Show more tabs from modules
  // Entries must be declared in modules descriptor with line
  // $this->tabs = array('entity:+tabname:Title:@mymodule:/mymodule/mypage.php?id=__ID__');   to add new tab
  // $this->tabs = array('entity:-tabname);                           to remove a tab
  complete_head_from_modules($conf, $langs, $object, $head, $h, 'productlot');

  complete_head_from_modules($conf, $langs, $object, $head, $h, 'productlot', 'remove');

  // Log
  /*
    $head[$h][0] = DOL_URL_ROOT.'/product/info.php?id='.$object->id;
    $head[$h][1] = $langs->trans("Info");
    $head[$h][2] = 'info';
    $h++;
    */

  return $head;
}



function product_admin_prepare_head()
{
  global $langs, $conf, $user;

  $h = 0;
  $head = array();

  $head[$h][0] = DOL_URL_ROOT."/product/admin/product.php";
  $head[$h][1] = $langs->trans('Parameters');
  $head[$h][2] = 'general';
  $h++;

  if (!empty($conf->global->PRODUIT_MULTIPRICES) && !empty($conf->global->PRODUIT_MULTIPRICES_ALLOW_AUTOCALC_PRICELEVEL))
  {
    $head[$h] = array(
      0 => DOL_URL_ROOT."/product/admin/price_rules.php",
      1 => $langs->trans('MultipriceRules'),
      2 => 'generator'
    );
    $h++;
  }

  // Show more tabs from modules
  // Entries must be declared in modules descriptor with line
  // $this->tabs = array('entity:+tabname:Title:@mymodule:/mymodule/mypage.php?id=__ID__');   to add new tab
  // $this->tabs = array('entity:-tabname);                           to remove a tab
  complete_head_from_modules($conf, $langs, null, $head, $h, 'product_admin');

  $head[$h][0] = DOL_URL_ROOT.'/product/admin/product_extrafields.php';
  $head[$h][1] = $langs->trans("ExtraFields");
  $head[$h][2] = 'attributes';
  $h++;

  $head[$h][0] = DOL_URL_ROOT.'/product/admin/product_supplier_extrafields.php';
  $head[$h][1] = $langs->trans("ProductSupplierExtraFields");
  $head[$h][2] = 'supplierAttributes';
  $h++;

  complete_head_from_modules($conf, $langs, null, $head, $h, 'product_admin', 'remove');

  return $head;
}



function product_lot_admin_prepare_head()
{
  global $langs, $conf, $user;

  $h = 0;
  $head = array();

  // Show more tabs from modules
  // Entries must be declared in modules descriptor with line
  // $this->tabs = array('entity:+tabname:Title:@mymodule:/mymodule/mypage.php?id=__ID__');   to add new tab
  // $this->tabs = array('entity:-tabname);                           to remove a tab
  complete_head_from_modules($conf, $langs, null, $head, $h, 'product_lot_admin');

  $head[$h][0] = DOL_URL_ROOT.'/product/admin/product_lot_extrafields.php';
  $head[$h][1] = $langs->trans("ExtraFields");
  $head[$h][2] = 'attributes';
  $h++;

  complete_head_from_modules($conf, $langs, null, $head, $h, 'product_lot_admin', 'remove');

  return $head;
}



function show_stats_for_company($product, $socid)
{
  global $conf, $langs, $user, $db;
  $form = new Form($db);

  $nblines = 0;

  print '<tr class="liste_titre">';
  print '<td class="left" width="25%">'.$langs->trans("Referers").'</td>';
  print '<td class="right" width="25%">'.$langs->trans("NbOfThirdParties").'</td>';
  print '<td class="right" width="25%">'.$langs->trans("NbOfObjectReferers").'</td>';
  print '<td class="right" width="25%">'.$langs->trans("TotalQuantity").'</td>';
  print '</tr>';

  // Customer proposals
  if (!empty($conf->propal->enabled) && $user->rights->propale->lire)
  {
    $nblines++;
    $ret = $product->load_stats_propale($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("propal");
    print '<tr><td>';
    print '<a href="propal.php?id='.$product->id.'">'.img_object('', 'propal', 'class="paddingright"').$langs->trans("Proposals").'</a>';
    print '</td><td class="right">';
    print $product->stats_propale['customers'];
    print '</td><td class="right">';
    print $product->stats_propale['nb'];
    print '</td><td class="right">';
    print $product->stats_propale['qty'];
    print '</td>';
    print '</tr>';
  }
  // Supplier proposals
  if (!empty($conf->supplier_proposal->enabled) && $user->rights->supplier_proposal->lire)
  {
    $nblines++;
    $ret = $product->load_stats_proposal_supplier($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("supplier_proposal");
    print '<tr><td>';
    print '<a href="supplier_proposal.php?id='.$product->id.'">'.img_object('', 'supplier_proposal', 'class="paddingright"').$langs->trans("SupplierProposals").'</a>';
    print '</td><td class="right">';
    print $product->stats_proposal_supplier['suppliers'];
    print '</td><td class="right">';
    print $product->stats_proposal_supplier['nb'];
    print '</td><td class="right">';
    print $product->stats_proposal_supplier['qty'];
    print '</td>';
    print '</tr>';
  }
  // Customer orders
  if (!empty($conf->commande->enabled) && $user->rights->commande->lire)
  {
    $nblines++;
    $ret = $product->load_stats_commande($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("orders");
    print '<tr><td>';
    print '<a href="commande.php?id='.$product->id.'">'.img_object('', 'order', 'class="paddingright"').$langs->trans("CustomersOrders").'</a>';
    print '</td><td class="right">';
    print $product->stats_commande['customers'];
    print '</td><td class="right">';
    print $product->stats_commande['nb'];
    print '</td><td class="right">';
    print $product->stats_commande['qty'];
    print '</td>';
    print '</tr>';
  }
  // Supplier orders
  if ((!empty($conf->fournisseur->enabled) && empty($conf->global->MAIN_USE_NEW_SUPPLIERMOD) || !empty($conf->supplier_order->enabled)) && $user->rights->fournisseur->commande->lire)
  {
    $nblines++;
    $ret = $product->load_stats_commande_fournisseur($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("orders");
    print '<tr><td>';
    print '<a href="commande_fournisseur.php?id='.$product->id.'">'.img_object('', 'supplier_order', 'class="paddingright"').$langs->trans("SuppliersOrders").'</a>';
    print '</td><td class="right">';
    print $product->stats_commande_fournisseur['suppliers'];
    print '</td><td class="right">';
    print $product->stats_commande_fournisseur['nb'];
    print '</td><td class="right">';
    print $product->stats_commande_fournisseur['qty'];
    print '</td>';
    print '</tr>';
  }
  // Customer invoices
  if (!empty($conf->facture->enabled) && $user->rights->facture->lire)
  {
    $nblines++;
    $ret = $product->load_stats_facture($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("bills");
    print '<tr><td>';
    print '<a href="facture.php?id='.$product->id.'">'.img_object('', 'bill').' '.$langs->trans("CustomersInvoices").'</a>';
    print '</td><td class="right">';
    print $product->stats_facture['customers'];
    print '</td><td class="right">';
    print $product->stats_facture['nb'];
    print '</td><td class="right">';
    print $product->stats_facture['qty'];
    print '</td>';
    print '</tr>';
  }
  // Supplier invoices
  if ((!empty($conf->fournisseur->enabled) && empty($conf->global->MAIN_USE_NEW_SUPPLIERMOD) || !empty($conf->supplier_invoice->enabled)) && $user->rights->fournisseur->facture->lire)
  {
    $nblines++;
    $ret = $product->load_stats_facture_fournisseur($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("bills");
    print '<tr><td>';
    print '<a href="facture_fournisseur.php?id='.$product->id.'">'.img_object('', 'supplier_invoice', 'class="paddingright"').$langs->trans("SuppliersInvoices").'</a>';
    print '</td><td class="right">';
    print $product->stats_facture_fournisseur['suppliers'];
    print '</td><td class="right">';
    print $product->stats_facture_fournisseur['nb'];
    print '</td><td class="right">';
    print $product->stats_facture_fournisseur['qty'];
    print '</td>';
    print '</tr>';
  }

  // Contracts
  if (!empty($conf->contrat->enabled) && $user->rights->contrat->lire)
  {
    $nblines++;
    $ret = $product->load_stats_contrat($socid);
    if ($ret < 0) dol_print_error($db);
    $langs->load("contracts");
    print '<tr><td>';
    print '<a href="contrat.php?id='.$product->id.'">'.img_object('', 'contract', 'class="paddingright"').$langs->trans("Contracts").'</a>';
    print '</td><td class="right">';
    print $product->stats_contrat['customers'];
    print '</td><td class="right">';
    print $product->stats_contrat['nb'];
    print '</td><td class="right">';
    print $product->stats_contrat['qty'];
    print '</td>';
    print '</tr>';
  }

  // BOM
  if (!empty($conf->bom->enabled) && $user->rights->bom->read)
  {
    $nblines++;
    $ret = $product->load_stats_bom($socid);
    if ($ret < 0) {
      setEventMessage($product->error, 'errors');
    }
    $langs->load("mrp");

    print '<tr><td>';
    print '<a href="bom.php?id='.$product->id.'">'.img_object('', 'bom', 'class="paddingright"').$langs->trans("BOM").'</a>';
    print '</td><td class="right">';

    print '</td><td class="right">';
    print $form->textwithpicto($product->stats_bom['nb_toconsume'], $langs->trans("RowMaterial"));
    print $form->textwithpicto($product->stats_bom['nb_toproduce'], $langs->trans("Finished"));
    print '</td><td class="right">';
    print $form->textwithpicto($product->stats_bom['qty_toconsume'], $langs->trans("RowMaterial"));
    print $form->textwithpicto($product->stats_bom['qty_toproduce'], $langs->trans("Finished"));
    print '</td>';
    print '</tr>';
  }

  // MO
  if (!empty($conf->mrp->enabled) && $user->rights->mrp->read)
  {
    $nblines++;
    $ret = $product->load_stats_mo($socid);
    if ($ret < 0) {
      setEventMessage($product->error, 'errors');
    }
    $langs->load("mrp");
    print '<tr><td>';
    print '<a href="mo.php?id='.$product->id.'">'.img_object('', 'mrp', 'class="paddingright"').$langs->trans("MO").'</a>';
    print '</td><td class="right">';
    print $form->textwithpicto($product->stats_mo['customers_toconsume'], $langs->trans("ToConsume"));
    print $form->textwithpicto($product->stats_mo['customers_consumed'], $langs->trans("QtyAlreadyConsumed"));
    print $form->textwithpicto($product->stats_mo['customers_toproduce'], $langs->trans("QtyToProduce"));
    print $form->textwithpicto($product->stats_mo['customers_produced'], $langs->trans("QtyAlreadyProduced"));
    print '</td><td class="right">';
    print $form->textwithpicto($product->stats_mo['nb_toconsume'], $langs->trans("ToConsume"));
    print $form->textwithpicto($product->stats_mo['nb_consumed'], $langs->trans("QtyAlreadyConsumed"));
    print $form->textwithpicto($product->stats_mo['nb_toproduce'], $langs->trans("QtyToProduce"));
    print $form->textwithpicto($product->stats_mo['nb_produced'], $langs->trans("QtyAlreadyProduced"));
    print '</td><td class="right">';
    print $form->textwithpicto($product->stats_mo['qty_toconsume'], $langs->trans("ToConsume"));
    print $form->textwithpicto($product->stats_mo['qty_consumed'], $langs->trans("QtyAlreadyConsumed"));
    print $form->textwithpicto($product->stats_mo['qty_toproduce'], $langs->trans("QtyToProduce"));
    print $form->textwithpicto($product->stats_mo['qty_produced'], $langs->trans("QtyAlreadyProduced"));
    print '</td>';
    print '</tr>';
  }

  return $nblines++;
}

function measuring_units_string($scale = '', $measuring_style = '', $unit = 0, $use_short_label = 0, $outputlangs = null)
{
  return measuringUnitString($unit, $measuring_style, $scale, $use_short_label, $outputlangs);
}

function measuringUnitString($unit, $measuring_style = '', $scale = '', $use_short_label = 0, $outputlangs = null)
{
  global $langs, $db;
  global $measuring_unit_cache;

  if (empty($outputlangs)) {
    $outputlangs = $langs;
  }

  if (empty($measuring_unit_cache[$unit.'_'.$measuring_style.'_'.$scale.'_'.$use_short_label]))
  {
    require_once DOL_DOCUMENT_ROOT.'/core/class/cunits.class.php';
    $measuringUnits = new CUnits($db);

    if ($measuring_style == '' && $scale == '')
    {
      $arrayforfilter = array(
        't.rowid' => $unit,
        't.active' => 1
      );
    } elseif ($scale !== '')
    {
      $arrayforfilter = array(
        't.scale' => $scale,
        't.unit_type' => $measuring_style,
        't.active' => 1
      );
    } else {
      $arrayforfilter = array(
        't.rowid' => $unit,
        't.unit_type' => $measuring_style,
        't.active' => 1
      );
    }
    $result = $measuringUnits->fetchAll('', '', 0, 0, $arrayforfilter);

    if ($result < 0) {
      return -1;
    } else {
      if (is_array($measuringUnits->records) && count($measuringUnits->records) > 0) {
        if ($use_short_label) $labeltoreturn = $measuringUnits->records[key($measuringUnits->records)]->short_label;
        else $labeltoreturn = $outputlangs->transnoentitiesnoconv($measuringUnits->records[key($measuringUnits->records)]->label);
      } else {
        $labeltoreturn = '';
      }
      $measuring_unit_cache[$unit.'_'.$measuring_style.'_'.$scale.'_'.$use_short_label] = $labeltoreturn;
      return $labeltoreturn;
    }
  } else {
    return $measuring_unit_cache[$unit.'_'.$measuring_style.'_'.$scale.'_'.$use_short_label];
  }
}

function measuring_units_squared($unit)
{
  $measuring_units = array();
  $measuring_units[0] = 0; // m -> m3
  $measuring_units[-1] = -2; // dm-> dm2
  $measuring_units[-2] = -4; // cm -> cm2
  $measuring_units[-3] = -6; // mm -> mm2
  $measuring_units[98] = 98; // foot -> foot2
  $measuring_units[99] = 99; // inch -> inch2
  return $measuring_units[$unit];
}


function measuring_units_cubed($unit)
{
  $measuring_units = array();
  $measuring_units[0] = 0; // m -> m2
  $measuring_units[-1] = -3; // dm-> dm3
  $measuring_units[-2] = -6; // cm -> cm3
  $measuring_units[-3] = -9; // mm -> mm3
  $measuring_units[98] = 88; // foot -> foot3
  $measuring_units[99] = 89; // inch -> inch3
  return $measuring_units[$unit];
}