问题 分享一个自己写的模板中动态分配样式的代码

<?php 
    if($this->countModules('left and right') == 0) {$grid = "12";}
    if($this->countModules('left or right') == 1) {$grid = "9";} 
    if($this->countModules('left and right') == 1) {$grid = "6";}
?>

<?php if ($this->countModules( 'left' )) : ?>
     <div id="left" class="grid_3"><jdoc:include type="modules" name="left" /></div>
<?php endif; ?> 
 <div id="main" class="grid_<?php echo $grid; ?>">
         .....
 </div>
<?php if ($this->countModules( 'right' )) : ?>
      <div id="right" class="grid_3"><jdoc:include type="modules" name="right" /></div>
<?php endif; ?> 
<div class="clearfix"></div>