Александр

$a = glob('*.PNG');
foreach($a as $name)
{
  $name_new = str_replace(".PNG", ".png", $name);
  rename($name, $name_new);
}

foreach (new MySQLiQueryIterator($db, $query) as $result)
{
        if ($result) 
       {
                while ($row = mysqli_fetch_row($result)) {
                    print "$row[0]\n";
                }
        }
}

<?php
                echo '<div class="goods-single-thumb-container">';
                if (has_post_thumbnail()) {
                    $large_image_url = wp_get_attachment_image_src(get_post_thumbnail_id(), 'large');
                    echo '<a title="' . the_title_attribute('echo=0') . '" >';
                    the_post_thumbnail('medium', array('class' => 'goods-single-thumb'));
                    echo '</a>';
                } else {
                    // show default image if the thumbnail is not found
                    echo '<img class="goods-item-thumb" src="' . plugins_url( '/img/gi.png' , dirname(__FILE__) ) . '" alt="">';
                }
                echo '</div>';
                ?>