Use of Smarty template engine

1. Why use Smarty?

1. PHP code is mixed with HTML code, it’s confusing. Smarty separates the presentation layer (front-end) and the logic layer (back-end).
2. Use smarty caching technology to effectively improve access speed.

2. The principle & use of Smarty

The principle can be represented by a picture

How to use
1: Introduce smarty’s entry file into index.php: Smarty.class.php
2: Instantiate a smarty class;
3: Configure smarty’s compilation directory, template directory, cache directory, etc. through objects.
4: The configuration file can be placed in a dedicated file.
Code

index.php file

<code><span><span><?php </span><span>//引入配置文件</span><span>require</span><span>'smarty/smarty.inc.php'</span>;
   <span>//注册变量</span><span>$name</span>=<span>"eric1122"</span>;
   <span>$smarty</span>->assign(<span>"name"</span>,<span>$name</span>);
   <span>//引入模板</span><span>$smarty</span>->display(<span>"index.tpl"</span>); 
<span>?></span></span></span></code>

smarty.inc.php file

<code><span></span>php
   <span>/**
    * smarty 配置文件
    */</span><span>//创建一个实际路径，加快速度</span><span><span>define</span></span>(<span>"ROOT_PATH"</span>,dirname(__FILE__));
   <span>//引入smarty入口文件</span><span>require</span>(ROOT_PATH<span>.</span><span>"/Smarty.class.php"</span>);
   <span>//实例化一个smarty</span><span>$smarty</span><span>=</span><span>new</span> Smarty();
   <span>//配置文件</span><span>//模板目录</span><span>$smarty</span><span>-></span>template_dir<span>=</span>ROOT_PATH<span>.</span><span>"/templates"</span>;
   <span>//缓存目录</span><span>$smarty</span><span>-></span>cache_dir<span>=</span>ROOT_PATH<span>.</span><span>"/cache"</span>;
   <span>//配置目录</span><span>$smarty</span><span>-></span>config_dir<span>=</span>ROOT_PATH<span>.</span><span>"/configs"</span>;
   <span>//配置编译目录</span><span>$smarty</span><span>-></span>compile_dir<span>=</span>ROOT_PATH<span>.</span><span>"/compile"</span>;   
<span>?></span></code>

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The above introduces the use of Smarty template engine, including aspects of content. I hope it will be helpful to friends who are interested in PHP tutorials.