本文实例讲述了PHP模板引擎Smarty中的保留变量用法。分享给大家供大家参考,具体如下:
在 Smarty 中,有一些保留变量,它们是不需要 PHP 脚本去分配就可以直接使用,即不用使用 $_tpl->assign('var','value') 去分配。
1、在模板中访问页面请求的变量
{$smarty.get.user} == $_GET['user'] {$smarty.post.user} == $_POST['user'] {$smarty.cookie.username} == $_COOKIE['username'] {$smarty.session.username} == $_SESSION['username'] {$smarty.server.REMOTE_ADDR} == $_SERVER["REMOTE_ADDR"] {$smarty.env.PATH} == $_ENV['PATH'] {$smarty.request.username} == $_REQUEST['username']
2、在模板文件中访问 PHP 脚本中定义的常量和系统常量
{$smarty.const.__FILE__} //当前执行的 PHP 文件 {$smarty.const.CONST_VAR} //访问 PHP 脚本中 define 定义的常量
3、在模板文件中获取当前服务器的时间
代码如下:
{$smarty.now|date_format:"%Y-%m-%d %H:%M:%S"} == PHP脚本中的 date('Y-m-d H:i:s',time())
4、配置文件在模板中的访问
可以通过 {$smarty.config.配置变量} 来访问配置文件中的模板变量。这样的话,在模板中访问配置文件中的变量就有两种方法:一、{#配置变量#};二、{$smarty.config.配置变量},如果有区域的话,也是如此。
5、获取 Smarty 内建函数 capture 捕获的数据
capture函数的作用是捕获模板输出的数据并将其存储到一个变量里,而不是把它们输出到页面,任何在 {capture name="foo"}和{/capture}之间的数据将被存储到变量$foo中,该变量由name属性指定。在模板中通过 $smarty.capture.foo 访问该变量,如果没有指定 name 属性,函数默认将使用 "default" 作为参数。
6、保留变量 $smarty.foreach
$smarty.foreach 获取 foreach 循环数组的一些信息,比如数组的个数、递增+1……,关于 $smarty.foreach 的使用,详细内容可参考前面一篇《PHP模板引擎Smarty内建函数foreach,foreachelse用法分析》
更多关于PHP相关内容感兴趣的读者可查看本站专题:《smarty模板入门基础教程》、《PHP模板技术总结》、《PHP基于pdo操作数据库技巧总结》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家基于smarty模板的PHP程序设计有所帮助。

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