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# Variables assigned from PHP
Variables assigned from PHP are referenced by preceding them with a dollar
(`$`) sign.
## Examples
```php
<?php
use Smarty\Smarty;
$smarty = new Smarty();
$smarty->assign('firstname', 'Doug');
$smarty->assign('lastname', 'Evans');
$smarty->assign('meetingPlace', 'New York');
$smarty->display('index.tpl');
```
`index.tpl` source:
```smarty
Hello {$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}.
```
This above would output:
```html
Hello Doug Evans, glad to see you can make it.
<br />
This weeks meeting is in .
This weeks meeting is in New York.
```
## Associative arrays
You can also reference associative array variables by specifying the key
after a dot "." symbol.
```php
<?php
$smarty->assign('Contacts',
array('fax' => '555-222-9876',
'email' => 'zaphod@slartibartfast.example.com',
'phone' => array('home' => '555-444-3333',
'cell' => '555-111-1234')
)
);
$smarty->display('index.tpl');
```
`index.tpl` source:
```smarty
{$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:
```html
555-222-9876<br />
zaphod@slartibartfast.example.com<br />
555-444-3333<br />
555-111-1234<br />
```
## Array indexes
You can reference arrays by their index, much like native PHP syntax.
```php
<?php
$smarty->assign('Contacts', array(
'555-222-9876',
'zaphod@slartibartfast.example.com',
array('555-444-3333',
'555-111-1234')
));
$smarty->display('index.tpl');
```
`index.tpl` source:
```smarty
{$Contacts[0]}<br />
{$Contacts[1]}<br />
{* you can print arrays of arrays as well *}
{$Contacts[2][0]}<br />
{$Contacts[2][1]}<br />
```
This will output:
```html
555-222-9876<br />
zaphod@slartibartfast.example.com<br />
555-444-3333<br />
555-111-1234<br />
```
## Objects
Properties of [objects](../../api/variables/objects.md) assigned from PHP
can be referenced by specifying the property name after the `->` symbol.
```smarty
name: {$person->name}<br />
email: {$person->email}<br />
```
this will output:
```html
name: Zaphod Beeblebrox<br />
email: zaphod@slartibartfast.example.com<br />
```
## Backed Enums (PHP 8.1+)
Smarty supports accessing properties of [backed enums](https://www.php.net/manual/en/language.enumerations.backed.php) introduced in PHP 8.1.
### Accessing Enum Properties
You can access the `name` and `value` properties of backed enum cases:
```smarty
{* Access enum case properties *}
<option id="{MyEnum::Foo->name}">{MyEnum::Foo->value}</option>
```
### Complete Example
```php
<?php
use Smarty\Smarty;
// Define a backed enum
enum Status: string {
case Active = 'active';
case Inactive = 'inactive';
case Pending = 'pending';
}
$smarty = new Smarty();
$smarty->assign('currentStatus', Status::Active);
$smarty->display('template.tpl');
```
`template.tpl`:
```smarty
{* Display enum properties *}
Current status: {$currentStatus->name} (value: {$currentStatus->value})
{* Use in HTML attributes *}
<select name="status">
<option value="{Status::Active->value}" {if $currentStatus->name === 'Active'}selected{/if}>Active</option>
<option value="{Status::Inactive->value}" {if $currentStatus->name === 'Inactive'}selected{/if}>Inactive</option>
<option value="{Status::Pending->value}" {if $currentStatus->name === 'Pending'}selected{/if}>Pending</option>
</select>
```
This would output:
```html
Current status: Active (value: active)
<select name="status">
<option value="active" selected>Active</option>
<option value="inactive">Inactive</option>
<option value="pending">Pending</option>
</select>
```
### Integer-backed Enums
Integer-backed enums work the same way:
```php
<?php
enum Priority: int {
case Low = 1;
case Medium = 2;
case High = 3;
}
$smarty->assign('priority', Priority::High);
```
```smarty
{* Access integer enum properties *}
Priority level: {$priority->value} ({$priority->name})
```
Output:
```html
Priority level: 3 (High)
```
> **Note**: Backed enum support requires PHP 8.1 or higher. The enum must be registered or available in the current namespace.
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