Dlaczego używasz $products?
POPRAWKA:
<?php
foreach ($products as $product) { //See *$products as $product*, so no need to use $products below instead use $product
echo "<tr>";
echo "<td>". $product['productCode']. "</td>";
echo "<td>". $product['name']. "</td>";
echo "<td>". $product['version']. "</td>";
echo "<td>". $product['releaseDate']. "</td>";
echo "<td><input type = \"submit\" value = \"Delete\" align = \"right\" ></td>";
echo "</tr>"
}
?>
