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Chapter 4. 变量

Smarty有多种类型的变量。

在Smarty中的变量可以直接显示,或者作为 函数, 属性 and 修饰器, 内部条件表达式等的参数。 要显示变量,可以简单地用 定界符 把变量括起来。

Example 4.1. 变量例子


{$Name}

{$product.part_no} <b>{$product.description}</b>

{$Contacts[row].Phone}

<body bgcolor="{#bgcolor#}">

  


说明

一个简单的检查Smarty变量的方法是打开Smarty的 调试控制台

从PHP赋值的变量

赋值的变量以美元符号 ($) 开头。

Example 4.2. 变量赋值

PHP 代码


<?php

$smarty = new Smarty();

$smarty->assign('firstname', 'Doug');
$smarty->assign('lastname', 'Evans');
$smarty->assign('meetingPlace', 'New York');

$smarty->display('index.tpl');

?>

index.tpl模板源码:


Hello {$firstname} {$lastname}, glad to see you can make it.
<br />
{* this will not work as $variables are case sensitive *}
This weeks meeting is in {$meetingplace}.
{* this will work *}
This weeks meeting is in {$meetingPlace}.

   

输出:


Hello Doug Evans, glad to see you can make it.
<br />
This weeks meeting is in .
This weeks meeting is in New York.

  

数组赋值

可以通过点号“.”来使用赋值的数组变量。

Example 4.3. 数组变量


<?php
$smarty->assign('Contacts',
    array('fax' => '555-222-9876',
          'email' => 'zaphod@slartibartfast.example.com',
          'phone' => array('home' => '555-444-3333',
                           'cell' => '555-111-1234')
                           )
         );
$smarty->display('index.tpl');
?>

   

index.tpl模板代码:


{$Contacts.fax}<br />
{$Contacts.email}<br />
{* you can print arrays of arrays as well *}
{$Contacts.phone.home}<br />
{$Contacts.phone.cell}<br />

   

输出:


555-222-9876<br />
zaphod@slartibartfast.example.com<br />
555-444-3333<br />
555-111-1234<br />

   

数组下标

你可以通过下标来使用数组,和PHP语法一样。

Example 4.4. 使用数组下标


<?php
$smarty->assign('Contacts', array(
                           '555-222-9876',
                           'zaphod@slartibartfast.example.com',
                            array('555-444-3333',
                                  '555-111-1234')
                            ));
$smarty->display('index.tpl');
?>

   

index.tpl模板代码:


{$Contacts[0]}<br />
{$Contacts[1]}<br />
{* you can print arrays of arrays as well *}
{$Contacts[2][0]}<br />
{$Contacts[2][1]}<br />

   

输出:


555-222-9876<br />
zaphod@slartibartfast.example.com<br />
555-444-3333<br />
555-111-1234<br />

   

对象

从PHP赋值的对象的属性和方法,可以通过->来使用。

Example 4.5. 使用对象


name:  {$person->name}<br />
email: {$person->email}<br />

   

输出:


name:  Zaphod Beeblebrox<br />
email: zaphod@slartibartfast.example.com<br />

   

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