About the usage of smarty loop nesting-PHP Tutorial-php.cn

About the usage of smarty loop nesting

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Release： 2023-04-01 12:56:02

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This article mainly introduces the usage of smarty loop nesting, and analyzes the implementation skills and related precautions of Smarty template nested loops in the form of examples. Friends in need can refer to it

The examples in this article describe smarty Nested loop usage. Share it with everyone for your reference, the details are as follows:

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");
?>

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The sample writing is as follows:

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>

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test2.php：

<?php
require_once(&#39;./include/db_fns.php&#39;);
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 <> &#39;unpbulish&#39;
                ORDER BY post_date DESC";
        $result2=mysql_query($query2);
        $i = 5; 
        while(($row2 = mysql_fetch_array($result2)) && $i > 0)
        {
            $row2[post_date]=date(&#39;m-d&#39;,strtotime($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");
?>

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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>

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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(&#39;test4.htm&#39;);
?>

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The template is written as follows:

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 p by 2}>
</tr>
<tr>
<{/if}>
<{/section}>
</tr>
</table>
</body>
</html>

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The key point is the Smarty variable $smarty.section.sec1.rownum, which is in the section loop The variable will get the index value starting from 1, so when rownum can be divided by 2, output to change the table (note! It is in front of behind) . So the number 2 is the number of records we want to present in a column. You can use this to change other different presentation methods.

Operators include the following:

eq, ne, neq, gt, lt, lte, le, gte, ge, is even, is odd, is not even, is not odd, not, mod, p by, even by, odd by

Example:

<!--{if $bigsize ge &#39;650&#39;}-->
   <img src="photo/<!--{$photo}-->" border="0" width="650" class="product_photo" />
<!--{else}-->
    <img src="photo/<!--{$photo}-->" border="0" class="product_photo" />
<!--{/if}-->

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Smarty was not commonly used before, A friend's website needs to be modified in the past two days; I used it for a while and it was quite interesting.

About capture:

The function of the capture function is to collect the data output by the template into a variable, rather than output them to the page.

Any data between {capture name="foo"} and {/capture} is received in the variable specified by the name attribute of the function ($foo).

The information collected can be used In the special variable $smarty.

For example, capture.foo collects the above data. If the function does not have a name attribute, "default" will be used.

Each {capture} must correspond to { /capture}, and the capture function cannot be nested.

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