PHP if语句依赖于值

We currently have the following code which displays a link if a quotation is viewable:

        <td><?php echo $this->__($_quotation->getstatus()); ?></td>
        <td class="a-center">
            <?php if ($_quotation->isViewableByCustomer()): ?>
                    <a href="<?php echo $this->getViewUrl($_quotation) ?>"><?php echo $this->__('View Quotation') ?></a>
                <?php endif; ?>
        </td>

We're looking to show the link if the quotation status value equals Active or Expired but not Pending.

How should I change this code around to reflect this?

I'm assuming you intend to show the status cell in any condition, and only link to it if Active or Expired. at least that's how I read your question.

Assuming the function $_quotation->getstatus() returns the strings "Active" or "Expired" before internationalization, just add something like this to the condition that displays the link:

 <td><?php echo $this->__($_quotation->getstatus()); ?></td>
 <td class="a-center">
     <?php if ($_quotation->isViewableByCustomer() && ($_quotation->getstatus() == "Active" || $_quotation->getstatus() == "Expired")): ?>
          <a href="<?php echo $this->getViewUrl($_quotation) ?>"><?php echo $this->__('View Quotation') ?></a>
     <?php endif; ?>
 </td>

EDIT According to comment below, isViewableByCustomer() is not relevant here, so try:

 <td><?php echo $this->__($_quotation->getstatus()); ?></td>
 <td class="a-center">
     <?php if ($_quotation->getstatus() == "Active" || $_quotation->getstatus() == "Expired"): ?>
          <a href="<?php echo $this->getViewUrl($_quotation) ?>"><?php echo $this->__('View Quotation') ?></a>
     <?php endif; ?>
 </td>

   <?php if ($this->__($_quotation->getstatus() == "Active" || $this->__($_quotation->getstatus() == "Expired"){?><td><?php echo $this->__($_quotation->getstatus()); ?></td>
        <td class="a-center">
            <?php if ($_quotation->isViewableByCustomer()): ?>
                    <a href="<?php echo $this->getViewUrl($_quotation) ?>"><?php echo $this->__('View Quotation') ?></a>
                <?php endif; ?>
        </td>