ThinkPHP使用Smarty第三方插件方法小结
本文实例讲述了ThinkPHP使用Smarty第三方插件的方法。分享给大家供大家参考，具体如下： 如果你在使用ThinkPHP框架的时候不想采用TP自带的模版系统，而使用第三方的模版系统，你有很多其他的选择，在这里我仅介绍Smarty这种比较官方，而且比较强大的模版系统
本文实例讲述了ThinkPHP使用Smarty第三方插件的方法。分享给大家供大家参考，具体如下：
如果你在使用ThinkPHP框架的时候不想采用TP自带的模版系统，而使用第三方的模版系统，你有很多其他的选择，在这里我仅介绍Smarty这种比较官方，而且比较强大的模版系统。
由于Smarty兼容PHP4，因此，它的效率会相对低一点点，这个低只是相对的，估计等Smarty啥时候正式放弃PHP4的时候，效率可能会上很大一个台阶。
在TP框架的PlugIns目录下面，有一个SmartTemplate目录，里面就是系统自带的Smarty插件。
使用方法如下：
1、在项目的Conf/Config.php文件里加上：
return array( 'THINK_PLUGIN_ON' => true, 'TMPL_ENGINE_TYPE'=>'smarty', );
2、下载好Smarty，并将smarty的libs目录整个拷至项目的PlugIns目录下（说明一下，PlugIns目录可能会不存在，需要自己建立），同时将libs目录改名为SmartTemplate（希望没有记错，其实也就是与THINKPHP的PlugIns目录里的SmartyTemplate目录同名即可），如果你不愿意把目录改成这个名字，那么，你必须到TP的插件目录里修改插件文件，使之包含路径正确。
3、注意修改每次修改action或模板文件后删除Temp下的html文件
说明一下：上面的内容来自于官方，由lin_chaoqi朋友解答的，网址为：http://bbs.thinkphp.cn/viewthread.php?tid=305&highlight=smarty
在这里我要提的方法是于上面不一样的，黑黑
因为我在使用第三方模版插件的时候，特地看了TP的view.class.php发现了一些很重要的问题，那就是，如果采用第三方模版插件，那么第三方模版插件的效率可能不能保证，因为View类的fetch方法在判断是否为第三方插件之间，作了很多TP模版插件的自有处理，而这些对于使用第三方模版插件来说，几乎是完全无效的，这些处理可能会给第三方插件带来影响，同时也影响了第三方插件的执行效率。问题已经与流年沟通过，但由于改动可能会很大，或许最近几个版本里，流年都不会尝试作改进吧，一是怕影响了那些已经使用第三方插件的程序，二来如果去除掉这些处理，那么View类可能就不需要了。流年对于这样的情况应该是不愿意看到的。毕竟这也影响了原有系统的架构，估计流年得仔细考虑了……［当然从流年个人来说，肯定是希望大家都使用TP自有的模版插件，只是我目前对于smarty则是更加熟悉而己］，但对于我这个使用者来说，我需要的是临时解决方法，所以，就有了下面的内容。
为了解决这个问题，我只有从View.class.php里下手，因为Action.class.php里有一行：
$this->tpl = View::getInstance();
那么，也就是说 tpl 这个变量是 View 的单例模式，检查了一下View.class.php中的这个getInstance方法，发现里面使用了 get_instance_of 这个函数（这个函数是有一点小BUG的，这里不作解释，但我目前也没有更好的解决方法），于是我对getInstance和__construct两个方法进行了改动，删除了__construct方法，加上了init方法，改动代码如下：
static function getInstance() {
get_instance_of(__CLASS__,'init');
init ($type=''){
$type)) {
$this->type = strToUpper( $type );
$this->type = strtoupper(C('TMPL_ENGINE_TYPE'));
in_array( $this->type, array('PHP','THINK') ) ){
$type = ucfirst( strToLower( $this->type ) );
vendor( $type );
$type();
$this;
return
}
public function
if(!empty(
}else{
}
if ( !
return new
}
return
}
也就是让View类在实例化的时候，同时调用init方法。在这个方法里，我将我自己的模版插件放到了第三方插件的目录（Vendor）下。
切记切记：千万不可漏掉最后一句return $this;，其实这就是我所说的get_instance_of的BUG，如果不加这句，那么当type变量为PHP或THINK时，getInstance是无法返回实例的。
新的使用方法步骤如下：
1、修改项目的Conf/Config.php文件：
return array( 'THINK_PLUGIN_ON' => true, 'TMPL_ENGINE_TYPE'=>'TpSmarty', );
2、在TP的Vendor目录下面，创建TpSmarty.php，内容如下：
<?php
include_once(PLUGIN_PATH."smarty/Smarty.class.php");
TpSmarty extends Smarty {
__construct (){
parent::Smarty();
$this->caching = true;
$this->template_dir = TMPL_PATH;
$this->compile_dir = CACHE_PATH ;
$this->cache_dir = TEMP_PATH ;
?>
class
public function
}
}
上面是最简单的写法，实际使用中，这些变量请改为与你自己的站点相配合。
3、根据上面的文件里的include_once函数，将smarty的libs目录拷贝至项目的PlugIns目录下，改名为：smarty（只需要与include_once中的目录相匹配即可）
4、然后，在项目的方法里就可以直接使用:
class IndexAction extends Action{
index(){
$this->assign('test','testss');
$this->display('default/index.html');
public function
}
}
}
只是，使用了插件后，display方法的参数是模版的全路径，而且不能留空（并非不能解决，只是要改动的代码就会更多，目前这个方法是改动最少的）。
测试一下，是否正常了？呵呵 。
现在，我们把Config里的模版引擎换回Think，同时在Tpl/default/目录下建立Index目录，里面放上index.html，并修改上面的index()方法，将原来的$this->display('default/index.html'); 改为$this->display(); ，试一下，是不是也正常了？
更多关于thinkPHP相关内容感兴趣的读者可查看本站专题：《ThinkPHP入门教程》、《ThinkPHP常用方法总结》、《smarty模板入门基础教程》及《PHP模板技术总结》。
希望本文所述对大家基于ThinkPHP框架的PHP程序设计有所帮助。
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