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

Home

Backend Development

PHP Tutorial

About the usage of smarty loop nesting

不言

Jun 19, 2018 am 10:17 AM

smartyNestedcycle

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");
?>

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>

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");
?>

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

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>

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 $bigsize ge &#39;650&#39;}-->
   <img  src="/static/imghwm/default1.png"  data-src="photo/<!--{$photo}-- alt="About the usage of smarty loop nesting" >"  class="lazy"   border="0" width="650" class="product_photo" />
<!--{else}-->
    <img  src="/static/imghwm/default1.png"  data-src="photo/<!--{$photo}-- alt="About the usage of smarty loop nesting" >"  class="lazy"   border="0" class="product_photo" />
<!--{/if}-->

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.

The above is the entire content of this article. I hope it will be helpful to everyone's learning. For more related content, please pay attention to the PHP Chinese website!

Related recommendations:

About the usage of PHP template engine Smarty’s built-in functions section and sectionelse

The above is the detailed content of About the usage of smarty loop nesting. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Optimize PHP Code: Reducing Memory Usage & Execution TimeMay 10, 2025 am 12:04 AM

TooptimizePHPcodeforreducedmemoryusageandexecutiontime,followthesesteps:1)Usereferencesinsteadofcopyinglargedatastructurestoreducememoryconsumption.2)LeveragePHP'sbuilt-infunctionslikearray_mapforfasterexecution.3)Implementcachingmechanisms,suchasAPC

PHP Email: Step-by-Step Sending GuideMay 09, 2025 am 12:14 AM

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

How to Send Email via PHP: Examples & CodeMay 09, 2025 am 12:13 AM

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

Advanced PHP Email: Custom Headers & FeaturesMay 09, 2025 am 12:13 AM

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Guide to Sending Emails with PHP & SMTPMay 09, 2025 am 12:06 AM

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

What is the best way to send an email using PHP?May 08, 2025 am 12:21 AM

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

Best Practices for Dependency Injection in PHPMay 08, 2025 am 12:21 AM

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHP performance tuning tips and tricksMay 08, 2025 am 12:20 AM

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

See all articles