How to use template engine in PHP?

With the continuous development of websites, many developers have begun to use template engines to more conveniently manage and present website content. As a very popular website development language, PHP also provides many template engines for developers to choose from, such as Smarty, Twig, and Blade. In this article, we will introduce how to use the template engine in PHP.

1. Smarty Template Engine

Smarty is a very popular PHP template engine. It makes website development more intuitive and clear by separating business logic and display logic. Here are the simple steps on how to use Smarty in PHP:

First, we need to install the Smarty template engine. You can install it through the Composer command line or directly download the Smarty compressed package. If you choose to use Composer, then just execute the following command:

composer require smarty/smarty

Next, we need to import the Smarty class in the PHP file and create a Smarty object:

<?php
require_once('/path/to/Smarty/Smarty.class.php');

$smarty = new Smarty();

Now, we have You're ready to start using Smarty with your PHP files.

2. Twig Template Engine

Twig is another popular PHP template engine that combines readability and flexibility, making it the first choice of many PHP developers . Here are the simple steps on how to use the Twig template engine in PHP:

First, you need to use the Composer command line or directly download the Twig compressed package, and then install it. If you choose to use Composer, then you only need to execute the following command:

composer require twig/twig

Next, we need to import the Twig class in the PHP file and create a Twig object:

<?php
require_once('/path/to/Twig/lib/Twig/Autoloader.php');

Twig_Autoloader::register();
$loader = new Twig_Loader_Filesystem('/path/to/templates');
$twig = new Twig_Environment($loader, [
    'cache' => '/path/to/compilation_cache',
]);

In the above code, You need to specify a Twig_Loader_Filesystem, which will tell Twig where to look for your template files. Additionally, you can specify a cache directory where Twig's compiled code is stored to speed up its performance.

3. Blade template engine

Blade is the template engine used in the Laravel framework, but it can also be used in any PHP application. Blade's syntax is simple and easy to understand, so it is more suitable when dealing with simple templates. Here are the simple steps on how to use the Blade template engine in PHP:

First, we still need to use the Composer command line or directly download the Blade compressed package, and then install it. If you choose to use Composer, then just execute the following command:

composer require phanan/koel-blade-extended

Next, we need to import the Blade class in the PHP file and create a Blade object:

<?php
require_once('/path/to/Blade/Blade.php');

$views = '/path/to/views';
$cache = '/path/to/cache';

$blade = new duncan3dcLaravelBladeInstance($views, $cache);

The above code is the same as Twig Very similar, you also need to specify a template file directory and a cache directory. Then, you can render the view file like this:

<?php
echo $blade->render('index', ['name' => 'Jack']);

index represents the name of the template, and ['name' => 'Jack'] represents the variable passed to the view file.

Summary

The above are the simple steps on how to use the template engine in PHP. Of course, during actual application, you need to have a deeper understanding of the syntax and usage of each template engine in order to better develop your website.

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