把这个学会，zencart的数据库操作，以及各种函数的调用基本会了
这个东西非常有用，你需要认真看一下，不要闲代码多。
如何在数据库中调出自己想要的产品，让它显示在首页。
据我本人不科学的理解，在includes/modules/里面见一个 模块文件，该文件是功能文件，也就是含有sql语句，以及执行sql语句的常用函数，这个是“功能文件”
我在这取名叫做 show_products.php
<?php
$show_product = 'SELECT p.products_id,p.products_model,p.products_price, p.products_image, ps.specials_new_products_price,pd.products_name,pd.products_description,cd.categories_description,cd.categories_id FROM products p
LEFT JOIN specials ps ON ps.products_id = p.products_id
LEFT JOIN products_description pd ON pd.products_id = p.products_id
LEFT JOIN products_to_categories pc ON pc.products_id = p.products_id
LEFT JOIN categories_description cd ON cd.categories_id = pc.categories_id order by rand()';
$show_product_handle = $db->Execute($show_product,18);
while (!$show_product_handle->EOF)
{
$show_product_content[] = array(
'id'=>$show_product_handle->fields['products_id'],
'product_name'=>$show_product_handle->fields['products_name'],
'products_description'=>$show_product_handle->fields['products_description'],
'product_module'=>$show_product_handle->fields['products_model'],
'product_price'=>$currencies->display_price(zen_get_products_base_price($show_product_handle->fields['products_id'])),
'special_price'=>$currencies->display_price(zen_get_products_special_price($show_product_handle->fields['products_id'])),
'description'=>$show_product_handle->fields['categories_description'],
'product_image'=>zen_image(DIR_WS_IMAGES . $show_product_handle->fields['products_image'], $show_product_handle->fields['products_name'], IMAGE_PRODUCT_NEW_WIDTH, IMAGE_PRODUCT_NEW_HEIGHT),
'product_url'=>zen_href_link(FILENAME_PRODUCT_INFO,'cPath='. $show_product_handle->fields['categories_id'] . '&products_id='.$show_product_handle->fields['products_id'])
);
$show_product_handle->MoveNext();
//print_r($show_product_handle);
}
//print_r($show_product_content);
?>
东西取出来了，得要按照我们需要的格式排列啊，就需要模板文件，在includes/templates/template_default/templates/建一个tpl_show_products.php的模板文件
<?php
include(DIR_WS_MODULES . zen_get_module_directory('show_product.php'));
if(is_array($show_product_content) && !empty($show_product_content))
{
$outPutHtml .= '<div id="product">';
$i=0;
$j=0;
foreach ($show_product_content as $key => $value)
{
$str=$value['products_description'];
$val=substr($str,0,170)."...";
$outPutHtml .= '<div id="Box'. $value['id'] .'">';
$outPutHtml .= '<div id="BoxT'. $value['id'] .'">';
$outPutHtml .= '<h2><a href="' . $value['product_url'] . '">' . $value['product_name'] . '</a></h2>';
$outPutHtml .= '</div>';
$outPutHtml .= '<div class="desc"><a href="' . $value['product_url'] . '" class="kuang" alt=" '. $value['product_name'] .' "></a></div>';
$outPutHtml .= '<div id="BoxD' . $value['id'] . '">';
$outPutHtml .= '<h3><span>RRP: ' . $value['product_price'] . '</span> - OUR PRICE: ' . $value['special_price'] . '</h3>';
$outPutHtml .= $val;
$outPutHtml .= '</div>';
$outPutHtml .= '<div id="BoxB' . $value['id'] . '">';
$outPutHtml .= '<a href="' . $value['product_url'] . '"><img src="includes/templates/2/images2/'. $value['id'] .'.gif"></a>';
$outPutHtml .= '</div>';
$outPutHtml .= '</div>';
// print_r($value);
}
$outPutHtml .= '</div>';
}
echo $outPutHtml;
//print_r($show_product_content);
?>
<!--
<div id="p_1">
<div id="p_li">
<h2><a href="ghd-red-lust-styler-p-252.html">GHD Pink Limited Edition</a></h2>
</div>
<a href="ghd-pink-limited-edition-p-255.html" class="kuang" alt="GHD Red Lust Styler"></a>
<div id="text">
<h3><span>RRP: $299.00 AUD</span> - OUR PRICE: $145.99 AUD</h3>
2010 ghd pink limited edition-Rediscover your passion for pink with the new ghd Pink limited edition.Each pink patterned ghd IV styler comes with a gorgeous raffia bag & mirror. </div>
</div>
<div id="an">
<a href="ghd-pink-limited-edition-p-255.html"><img src="includes/templates/2/images2/p_an_4.jpg"></a>
</div>
-->
最后是引用这一块，比如我想在首页的一个DIV里显示这些内容
<div class="products">
<?php
//display product module
require($template->get_template_dir('tpl_module_show_product.php', DIR_WS_TEMPLATE, $current_page_base, 'templates').'/tpl_module_show_product.php');
?>
</div>