什么'；我的Joomla条件模块位置错了

下面是我的if条件，说明如何根据模块是否位于"左"或"右"位置，或者模块是否同时位于"左’和"右"来显示结构。

模块处于"左"或"右"位置的条件有效。但是，如果我在"左"answers"右"位置都有一个模块，则只显示"左"位置的模块，而不显示"右"位的模块。

有人能帮我解决问题吗？

<?php if($this->countModules('left')) : ?>
<!-- Content Region with Left Column: Start -->
<div class="contentholder onecol">
    <div class="contentcol colleft">
        <jdoc:include type="modules" name="left" style="xhtml" />
        <div class="clear"></div>
    </div>
    <div class="contentbody">
        <jdoc:include type="message" />
        <jdoc:include type="component" />
        <div class="clear"></div>
    </div>
    <div class="clear"></div>
</div>
<!-- Content Region with Left Column: End -->
<?php elseif($this->countModules('right')) : ?>
<!-- Content Region with Right Column: Start -->
<div class="contentholder onecol">
    <div class="contentbody">
        <jdoc:include type="message" />
        <jdoc:include type="component" />
        <div class="clear"></div>
    </div>
    <div class="contentcol colleft">
        <jdoc:include type="modules" name="right" style="xhtml" />
        <div class="clear"></div>
    </div>
    <div class="clear"></div>
</div>
<!-- Content Region with Right Column: End -->
<?php elseif(($this->countModules('left')) && ($this->countModules('right'))) : ?>
<!-- Content Region with Left & Right Column: Start -->
<div class="contentholder twocol">
    <div class="contentcol colleft">
        <jdoc:include type="modules" name="left" style="xhtml" />
        <div class="clear"></div>
    </div>
    <div class="contentbody">
        <jdoc:include type="message" />
        <jdoc:include type="component" />
        <div class="clear"></div>
    </div>
    <div class="contentcol colleft">
        <jdoc:include type="modules" name="right" style="xhtml" />
        <div class="clear"></div>
    </div>
    <div class="clear"></div>
</div>
<!-- Content Region with Left & Right Column: End -->
<?php else : ?>
<!-- Content Region with No Columns: Start -->
<div class="contentholder">
    <div class="contentbody">
        <jdoc:include type="message" />
        <jdoc:include type="component" />
        <div class="clear"></div>
    </div>
    <div class="clear"></div>
</div>
<!-- Content Region with No Columns: End -->
<?php endif; ?>