How to display only sub categories of a category?

Code: Select all

- PC Components 
     PC Components -> CPU
     PC Components -> Mainboard
     PC Components -> RAM
     PC Components -> VGA
- Notebook
     Notebook -> Asus
     Notebook -> MSI
     Notebook -> Lenovo
     Notebook -> Dell
- Accessories
    Accessories -> Cable
    Accessories -> Fan
    Accessories -> Heatsink

Code: Select all

- PC Components 
- Notebook
- Accessories

Code: Select all

- PC Components 
      CPU
      Mainboard
      RAM
      VGA
- Notebook
      Asus
      MSI
      Lenovo
      Dell
- Accessories
     Cable
     Fan
     Heatsink

Code: Select all

<div class="box">
  <div class="box-heading"><?php echo $heading_title; ?></div>
  <div class="box-content">
    <div class="box-category">
      <ul>
        <?php foreach ($categories as $category) { ?>
        <li>
          <?php if ($category['category_id'] == $category_id) { ?>
          <a href="<?php echo $category['href']; ?>" class="active"><?php echo $category['name']; ?></a>
          <?php } else { ?>
          <a href="<?php echo $category['href']; ?>"><?php echo $category['name']; ?></a>
          <?php } ?>
          <?php if ($category['children']) { ?>
          <ul>
            <?php foreach ($category['children'] as $child) { ?>
            <li>
              <?php if ($child['category_id'] == $child_id) { ?>
              <a href="<?php echo $child['href']; ?>" class="active"> <?php echo $child['name']; ?></a>
              <?php } else { ?>
              <a href="<?php echo $child['href']; ?>"> <?php echo $child['name']; ?></a>
              <?php } ?>
            </li>
            <?php } ?>
          </ul>
          <?php } ?>
        </li>
        <?php } ?>
      </ul>
    </div>
  </div>
</div>

Code: Select all

<div class="box">
  <div class="box-heading"><?php echo $heading_title; ?></div>
  <div class="box-content">
    <div class="box-category">
      <ul>
        <?php foreach ($categories as $category) { ?>
        <li>
          <?php if ($category['category_id'] == $category_id) { ?>
          <a href="<?php echo $category['href']; ?>" class="active"><?php echo $category['name']; ?></a>
		  <?php if ($category['children']) { ?>
          <ul>
            <?php foreach ($category['children'] as $child) { ?>
            <li>
              <?php if ($child['category_id'] == $child_id) { ?>
              <a href="<?php echo $child['href']; ?>" class="active"> <?php echo $child['name']; ?></a>
              <?php } else { ?>
              <a href="<?php echo $child['href']; ?>"> <?php echo $child['name']; ?></a>
              <?php } ?>
            </li>
            <?php } ?>
          </ul>
          <?php } ?>
          <?php } else { ?>
          <a href="<?php echo $category['href']; ?>"><?php echo $category['name']; ?></a>
          <?php } ?>
        </li>
        <?php } ?>
      </ul>
    </div>
  </div>
</div>

Code: Select all

<div class="box">
  <div class="box-heading"><?php echo $heading_title; ?></div>
  <div class="box-content">
    <div class="box-category">
      <ul>
        <?php foreach ($categories as $category) { ?>
        <li>
          <a href="<?php echo $category['href']; ?>" class="active"><?php echo $category['name']; ?></a>
          <?php if ($category['children']) { ?>
          <ul>
            <?php foreach ($category['children'] as $child) { ?>
            <li>
              <?php if ($child['category_id'] == $child_id) { ?>
              <a href="<?php echo $child['href']; ?>" class="active"> - <?php echo $child['name']; ?></a>
              <?php } else { ?>
              <a href="<?php echo $child['href']; ?>"> - <?php echo $child['name']; ?></a>
              <?php } ?>
            </li>
            <?php } ?>
          </ul>
          <?php } ?>
        </li>
        <?php } ?>
      </ul>
    </div>
  </div>
</div>