如果您使用多个 PHP 文件,那么创建模板渲染器类是明智的,它将引导 Twig 类、设置选项并负责查找和渲染请求的模板:
<?php
// Use correct path to Twig's autoloader file
require_once '/path/to/lib/Twig/Autoloader.php';
// Twig's autoloader will take care of loading required classes
Twig_Autoloader::register();
class TemplateRenderer
{
public $loader; // Instance of Twig_Loader_Filesystem
public $environment; // Instance of Twig_Environment
public function __construct($envOptions = array(), $templateDirs = array())
{
// Merge default options
// You may want to change these settings
$envOptions += array(
'debug' => false,
'charset' => 'utf-8',
'cache' => './cache', // Store cached files under cache directory
'strict_variables' => true,
);
$templateDirs = array_merge(
array('./templates'), // Base directory with all templates
$templateDirs
);
$this->loader = new Twig_Loader_Filesystem($templateDirs);
$this->environment = new Twig_Environment($this->loader, $envOptions);
}
public function render($templateFile, array $variables)
{
return $this->environment->render($templateFile, $variables);
}
}
不要复制粘贴,这只是一个示例,您的实现可能会根据您的需要而有所不同。将此类保存在某处
用法
我将假设您的目录结构类似于:
/home/www/index.php
/home/www/products.php
/home/www/about.php
在网络服务器的根目录下创建目录(本例中为/home/www):
/home/www/templates # this will store all template files
/home/www/cache # cached templates will reside here, caching is highly recommended
把你的模板文件放到templates目录下
/home/www/templates/index.twig
/home/www/templates/products.twig
/home/www/templates/blog/categories.twig # Nested template files are allowed too
现在示例 index.php 文件:
<?php
// Include our newly created class
require_once 'TemplateRenderer.php';
// ... some code
$news = getLatestNews(); // Pulling out some data from databases, etc
$renderer = new TemplateRenderer();
// Render template passing some variables and print it
print $renderer->render('index.twig', array('news' => $news));
其他 PHP 文件类似。
注意事项
更改设置/实施以满足您的需求。您可能希望限制对templates 目录的网络访问(甚至将其放在外面的某个地方),否则每个人都可以下载模板文件。