smarty循环嵌套用法示例分析_PHP教程

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">&nbsp;</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", "http://www.zzvips.com/");

									$smarty->assign("$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}-->