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smarty循环嵌套用法示例分析

更新时间:2020-03-11 00:01:54 作者:startmvc
本文实例讲述了smarty循环嵌套用法。分享给大家供大家参考,具体如下:test3.php:<?phpre

本文实例讲述了smarty循环嵌套用法。分享给大家供大家参考,具体如下:

test3.php:


<?php
require "main.php";
$forum = array(
 array("category_id" => 1, "category_name" => "公告区",
 "topic" => array(
 array("topic_id" => 1, "topic_name" => "站务公告")
 )
 ),
 array("category_id" => 2, "category_name" => "文学专区",
 "topic" => array(
 array("topic_id" => 2, "topic_name" => "好书介绍"),
 array("topic_id" => 3, "topic_name" => "奇文共赏")
 )
 ),
 array("category_id" => 3, "category_name" => "电脑专区",
 "topic" => array(
 array("topic_id" => 4, "topic_name" => "硬件周边"),
 array("topic_id" => 5, "topic_name" => "软件讨论")
 )
 )
);
$tpl->assign("forum", $forum);
$tpl->display("test3.htm");
?>

样版的写法如下:

templates/test3.htm:


<html>
<head>
<title>循环嵌套测试</title>
</head>
<body>
<table width="200" border="0" align="center" cellpadding="3" cellspacing="0">
 <{section name=sec1 loop=$forum}>
 <tr>
 <td colspan="2"><{$forum[sec1].category_name}></td>
 </tr>
 <{section name=sec2 loop=$forum[sec1].topic}>
 <tr>
 <td width="25"> </td>
 <td width="164"><{$forum[sec1].topic[sec2].topic_name}></td>
 </tr>
 <{/section}>
 <{/section}>
</table>
</body>
</html>

test2.php:


<?php
require_once('./include/db_fns.php');
include_once("./Smarty/libs/Smarty.class.php"); //包含Smarty类文件
$smarty = new Smarty(); //建立Smarty实例对象$Smarty
$smarty->template_dir = "./templates/dedecms";//设置模板目录
$smarty->compile_dir = "templates/templates_c"; //设置编译目录
$smarty->assign("template_url", "./");
$smarty->assign("$site_url", "//www.jb51.net/");
$smarty->assign("$site_name", "文章管理系统");
$smarty->left_delimiter = "<{"; //设置左边界符
$smarty->right_delimiter = "}>"; //设置右边界符
$db_conn = db_connect();
$query = "SELECT cat_ID,cat_name FROM categories ORDER BY cat_ID DESC";
$result = mysql_query($query);
$i = 5;
while(($row = mysql_fetch_array($result)) && $i > 0)
{
 $query2="SELECT ID, post_title, post_date
 FROM post
 WHERE post.post_category =$row[cat_ID]
 AND post_status <> 'unpbulish'
 ORDER BY post_date DESC";
 $result2=mysql_query($query2);
 $i = 5; 
 while(($row2 = mysql_fetch_array($result2)) && $i > 0)
 {
 $row2[post_date]=date('m-d',strtotime($row2[post_date]));
 $category = array("cat_ID"=>"$row[cat_ID]","cat_name"=>"$row[cat_name]",
 "post"=>array("ID"=>"$row2[ID]",
 "post_title"=>"$row2[post_title]" ,
 "post_category"=>"$row2[post_category]" ,
 "post_date"=>"$row2[post_date]"));
 $i--;
 }
}
$smarty->assign("forum", $category);
$smarty->display("test2.htm");
?>

test2.htm:


<html>
  <head>
  <title>嵌套循环测试</title>
  </head>
  <body>
  <table width="200" border="0" align="center" cellpadding="3" cellspacing="0">
  <{section name=sec1 loop=$forum}>
   <tr>
   <td colspan="2"><{$forum[sec1].cat_id}></td>
   </tr>
 <{section name=sec2 loop=$forum[sec1].post}>
   <tr>
   <td width="25"> </td>
   <td width="164"><{$forum[sec1].post[sec2].post_title}></td>
   </tr>
 <{/section}>
  <{/section}>
  </table>
</body>
</html>

test4.php:


<?php
require "main.php";
$my_array = array(
array("value" => "0"),
array("value" => "1"),
array("value" => "2"),
array("value" => "3"),
array("value" => "4"),
array("value" => "5"),
array("value" => "6"),
array("value" => "7"),
array("value" => "8"),
array("value" => "9"));
$tpl->assign("my_array", $my_array);
$tpl->display('test4.htm');
?>

模版的写法如下:

templates/test4.htm:


<html>
<head>
<title>横向重复表格测试</title>
</head>
<body>
<table width="500" border="1" cellspacing="0" cellpadding="3">
<tr>
<{section name=sec1 loop=$my_array}>
<td><{$my_array[sec1].value}></td>
<{if $smarty.section.sec1.rownum is div by 2}>
</tr>
<tr>
<{/if}>
<{/section}>
</tr>
</table>
</body>
</html>

重点在于 $smarty.section.sec1.rownum 这个 Smarty 变量,在 section 循环中这个变量会取得从 1 开始的索引值,所以当 rownum 能被 2 除尽时,就输出 </tr><tr> 使表格换列 (注意!是 </tr> 在前面<tr> 在后面) 。因此数字 2 就是我们在一列中想要呈现的资料笔数。各位可以由此去变化其它不同的呈现方式。

运算符有以下这些

eq、ne、neq、gt、lt、lte、le、gte、ge、is even、is odd、is not even、is not odd、not、mod、div by、even by、odd by

示例:


<!--{if $bigsize ge '650'}-->
 <img src="photo/<!--{$photo}-->" border="0" width="650" class="product_photo" />
<!--{else}-->
 <img src="photo/<!--{$photo}-->" border="0" class="product_photo" />
<!--{/if}-->

以前不常用smarty,这两天有个朋友的网站要改;顺手用了一下,还是挺有意思的。

关于capture 的说明:

capture函数的作用是收集模板输出的数据到一个变量里,而不是把它们输出到页面. 

任何在   {capture   name="foo"}和{/capture}之间的数据都被收到了由函数的名称属性指定的变量里($foo). 

收集的信息可以用在特殊变量$smarty里. 

例如capture.foo就收集了以上数据.如果函数没有名字属性,将使用"default". 

每个{capture}都必须对应{/capture},也不能嵌套使用capture函数.

smarty 循环 嵌套