Chapter 4. Variables
Smarty has several different types of variables. The type of the variable
depends on what symbol it is prefixed with (or enclosed within).
Variables in Smarty can be either displayed directly or used as arguments
for function attributes and modifiers, inside conditional expressions,
etc. To print a variable, simply enclose it in the delimiters so that it
is the only thing contained between them. Examples:
{$Name}
{$Contacts[row].Phone}
<body bgcolor="{#bgcolor#}"> |
Variables assigned from PHP
Variables that are assigned from PHP are referenced by preceding them with
a dollar sign $. Variables assigned from within the
template with the assign
function are also displayed this way.
Example 4-1. assigned variables Hello {$firstname}, glad to see you could make it.
<br />
Your last login was on {$lastLoginDate}. |
This will output:
Hello Doug, glad to see you could make it.
<br />
Your last login was on January 11th, 2001. |
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Associative arrays
You can also reference associative array variables that are
assigned from PHP by specifying the key after the '.' (period)
symbol.
Example 4-2. accessing associative array variables
<?php $smarty = new Smarty; $smarty->assign('Contacts', array('fax' => '555-222-9876', 'email' => 'zaphod@slartibartfast.com', 'phone' => array('home' => '555-444-3333', 'cell' => '555-111-1234'))); $smarty->display('index.tpl'); ?>
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where the content of index.tpl is:
{$Contacts.fax}<br />
{$Contacts.email}<br />
{* you can print arrays of arrays as well *}
{$Contacts.phone.home}<br />
{$Contacts.phone.cell}<br /> |
this will output:
555-222-9876<br />
zaphod@slartibartfast.com<br />
555-444-3333<br />
555-111-1234<br /> |
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Array indexes
You can reference arrays by their index, much like native PHP
syntax.
Example 4-3. accessing arrays by index
<?php
$smarty = new Smarty; $smarty->assign('Contacts', array('555-222-9876', 'zaphod@slartibartfast.com', array('555-444-3333', '555-111-1234'))); $smarty->display('index.tpl');
?>
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where index.tpl is:
{$Contacts[0]}<br />
{$Contacts[1]}<br />
{* you can print arrays of arrays as well *}
{$Contacts[2][0]}<br />
{$Contacts[2][1]}<br /> |
This will output:
555-222-9876<br />
zaphod@slartibartfast.com<br />
555-444-3333<br />
555-111-1234<br /> |
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Objects
Properties of objects assigned from PHP can be referenced
by specifying the property name after the '->' symbol.
Example 4-4. accessing object properties name: {$person->name}<br />
email: {$person->email}<br /> |
this will output:
name: Zaphod Beeblebrox<br />
email: zaphod@slartibartfast.com<br /> |
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