php - 每个 LI foreach 的替代类(class)

Question

我正在尝试为每个 LI foreach 提供一个替代类(class)。

即

<li class="odd">
text
</li>
<li class="even">
text
</li>
<li class="odd">
text
</li>
<li class="even">
text
</li>

这是我的代码:

<ul>
 <?php foreach ($this->item->extra_fields as $key=>$extraField): ?>
 <?php if($extraField->value): ?>
  <li class="<?php echo ($key%2) ? "odd" : "even"; ?> type<?php echo ucfirst($extraField->type); ?> group<?php echo $extraField->group; ?>">
Text here
  </li>
 <?php endif; ?>
 <?php endforeach; ?>
</ul>

请问谁能帮...谢谢

Answer 1

尝试:

<?php $count = 0; // need to set first value
<?php foreach ($this->item->extra_fields as $key=>$extraField): ?>
   <?php if($extraField->value): ?>
      <li class="<?php echo (++$count % 2) ? "odd" : "even"; ?> type <?php echo ucfirst($extraField->type); ?> group<?php echo $extraField->group; ?>">
         Text here
      </li>
   <?php endif; ?>
<?php endforeach; ?>

Link to pre/post increment docs if needed