Как сделать проверку наличия картинки в Joomla 3.x? - Joomla 3.x: Шаблоны, разметка и макеты вывода

<div class="col-sm-6 minor">
      <a class="title-news-minor" href="<?=$item->link?>">
        <img src="<?=$images->image_intro?>" alt="<?=$item->title?>" title="<?=$item->title?>" class="no-lightbox">
        <<?=$item_heading?>><?=$item->title?></<?=$item_heading?>>
      </a>
      <p class="date-news"><?php echo $item->created;?></p>
    </div>

<div class="col-sm-6 minor">
    <a class="title-news-minor" href="<?php $item->link?>">
        <?php $image_link = 'images/no_iamges.png'; ?>

        <?php if(file_exists(JPATH_SITE . '/' . $images->image_intro)){ $image_link = $images->image_intro; } ?>
        <?php echo JHTML::_('image', $image_link, $item->title, array('class' = > 'no-lightbox', 'title' => $item->title)); ?>

        <<?php $item_heading?>>
            <?php $item->title?>
        </<?php $item_heading?>>
    </a>
    <p class="date-news"><?php echo $item->created;?></p>
</div>

<?php echo JHTML::_('image', $image_link, $item->title, array('class' = > 'no-lightbox', 'title' => $item->title)); ?>

<?php echo JHTML::_('image', $image_link, $item->title, array('class' => 'no-lightbox', 'title' => $item->title)); ?>

<a class="title-news-minor" href="/">
        
        		<img src="/." alt="Новость" class="no-lightbox" title="Новость">
        <p>Новость</p>
    </a>

echo '<pre>'; print_r($images); echo '</pre>';

<?php $image_link = '/images/no_iamges.png'; ?>

<div class="col-sm-6 minor">
    <a class="title-news-minor" href="<?php $item->link; ?>">
        <?php $image_link = 'images/mo_images.png'; ?>

        <?php if(file_exists(JPATH_SITE . '/' . $images->image_intro)){ $image_link = $images->image_intro; } ?>
        <img src="<?php echo $image_link; ?>" alt="<php echo $item->title; ?>" title="<php echo $item->title; ?>" class="no-lightbox">
        <<?php echo $item_heading; ?>><?php $item->title?></<?php echo $item_heading; ?>>
    </a>
    <p class="date-news"><?php echo $item->created; ?></p>
</div>

<div class="col-sm-6 minor">
        <a class="title-news-minor" href="<?=$item->link?>">
        	<?php if(isset($images->image_intro) && $images->image_intro !== '')  {
        		?>
           <img src="<? echo $images->image_intro; ?>" alt="<? echo $item->title; ?>" title="<?echo $item->title; ?>" class="no-lightbox">
           <?
      } ?>
          <<?=$item_heading?>><?=$item->title?></<?=$item_heading?>>
        </a>
        <p class="date-news"><?php echo $item->created;?></p>
      </div>