推荐订阅源

1.安装 TWIG
   composer require twig/twig
2.COMPOSER自动加载的引用
修改 BOOTSTRAP.PHP 增加

public function _initAutoload() {
    require __DIR__ . "/../vendor/autoload.php";
}
3.新建ADAPTER
任意命名 需要实现Yaf_View_Interface接口

class Template_Adapter implements Yaf_View_Interface
{
    private $vars;
    private $path_view;
    private $twig;
    private $loader;
    private $extraParams;
    public function __construct($tmplPath = null, $extraParams = array())
    {
        if ($tmplPath) {
            $this->path_view = $tmplPath;
        }
        $this->extraParams=$extraParams;
    }
    private function f()
    {
        if (!$this->loader) {
            $this->loader = new  Twig_Loader_Filesystem($this->path_view);
            $this->twig = new Twig_Environment( $this->loader , $this->extraParams);
        }
    }
    public function assign($spec, $value = null)
    {
        if (is_array($spec)) {
            $this->vars = $spec;
            return;
        }
        $this->vars[$spec] = $value;
    }
    public function display($tpl, $tpl_vars = null)
    {
        if (!is_null($tpl_vars) && is_array($tpl_vars)) {
            $this->vars = $tpl_vars;
        }
        $this->f();
        echo $this->twig->render($tpl,$this->vars);
    }
    public function render($tpl, $tpl_vars = null)
    {
        $this->display($tpl, $tpl_vars);
    }
    public function setScriptPath($template_dir)
    {
        if ($template_dir) {
            $this->path_view = $template_dir;
        }
    }
    public function getScriptPath()
    {
        return $this->path_view;
    }
}

4.BOOTSTARP中增加TWIG引用
public function _initView(Yaf_Dispatcher $dispatcher){
       $dispatcher->autoRender(false);
      $ve= new Template_Adapter(APPLICATION_PATH.'/view/',
          [
              'path_cache' => APPLICATION_PATH.'/viewcache/'
          ]);*/
       require 'Template_Adapter.php';
           $ve= new Template_Adapter(APPLICATION_PATH.'/view/',[
        'debug' => false,
        'charset' => 'UTF-8',
        'base_template_class' => 'Twig_Template',
        'strict_variables' => false,
        'autoescape' => 'html',
        'cache' => APPLICATION_PATH.'/viewcache/',
        'auto_reload' => null,
        'optimizations' => -1]);
       Yaf_Dispatcher::getInstance()->setView($ve);
}
5.控制器中调用

$this->getView()->display('a.html');