<?php
$slides = $db->query("SELECT * FROM slider WHERE slider_durum=1")->fetchAll();
if ($slides) :
?>
  <div onclick="" class="glide__slide single-channel" title="">
    <?php foreach ($slides as $slide) : ?>
      <picture><a href="http://www.test.com/testhaber/<?= $slide['slider_seourl'] ?>" target="_blank">
          <img src="<?= ($slide["slider_logo"]) ? $slide["slider_logo"] : "" ?>" width="100" alt="" loading="lazy" /></a>
      </picture>
    <?php endforeach; ?>
  </div>
<?php endif; ?>