ページ テンプレートを作成し、次のようにフォームを作成します。
$args = array(
'posts_per_page' => '',
'offset' => 0,
'category' => '',
'orderby' => 'post_date',
'order' => 'DESC',
'include' => '',
'exclude' => '',
'meta_key' => '',
'meta_value' => '',
'post_type' => 'product',
'post_mime_type' => '',
'post_parent' => '',
'post_status' => 'publish',
'suppress_filters' => true );
$products = get_posts( $args );
foreach ($products as $product) {
//echo out your table, eg
$pid = $product->ID;
$pname = $product->post_title;
$inputName = $pid.'quantity';
echo "<tr>
<td>$pid</td>
<td>$pname</td>
<td><input type='text' name='$inputName' value=''> </td>
</tr>";
}