smarty 怎么实现i++

smarty 如何实现i++
在html页面    smarty如何实现i++
如何把下面这段C#代码翻译成smarty下的代码？

<br /><%<br />                   int i_count = 0; <br />                   foreach (GridViewRow row in this.GridView1.Rows)<br />                   {<br />                          if (i_count%4 == 0)<br />                          {<br />%><br />                                 <div>.1..<div><br /><%<br />                          }<br />                          else<br />                           {<br />%><br />                                 <div>.2..<div><br /><%<br />                            }<br />                           i_count ++ ;<br />                    }<br />%><br />

我写的是这样，但是ERROR

<br><br>                   {assign var="i_count"}<br>                   {foreach from=$row item=item}<br>                   <br>                          {if $i_count mod 4}<br>                          <br>                                 <div>.2..<div>
<br>                        <br>                          {else}<br>                           <br>                                 <div>.1..<div><div class="clear">
                 
              
              
        
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