How can CSS be utilized to improve the alignment of images in tables generated by PHP?

When images are displayed within tables generated by PHP, CSS can be used to improve their alignment by setting specific styles for the images. By applying CSS rules such as "vertical-align: middle;" or "text-align: center;", the images can be centered or aligned properly within the table cells.

echo '<table>';
echo '<tr>';
echo '<td><img src="image1.jpg" style="vertical-align: middle;"></td>';
echo '<td><img src="image2.jpg" style="vertical-align: middle;"></td>';
echo '</tr>';
echo '</table>';