# HtmlTag
The `HtmlTag` helper is used to **create the root of an HTML document**, the
open and close tags for the `` element.
## Basic Usage
```php
htmlTag(['lang' => 'en'])->openTag() ?>
htmlTag()->closeTag() ?>
```
Output:
```html
```
## Using Attributes
### Set a single Attribute
=== "Invoke Usage"
```php
$this->htmlTag(['lang' => 'en']);
echo $this->htmlTag()->openTag(); //
```
=== "Setter Usage"
```php
$this->htmlTag()->setAttribute('lang', 'en');
echo $this->htmlTag()->openTag(); //
```
### Set multiple Attributes
=== "Invoke Usage"
```php
$this->htmlTag(['lang' => 'en', 'id' => 'example']);
echo $this->htmlTag()->openTag(); //
```
=== "Setter Usage"
```php
$this->htmlTag()->setAttributes(['lang' => 'en', 'id' => 'example']);
echo $this->htmlTag()->openTag(); //
```
### Get current Value
To get the current value, use the `getAttributes()` method.
```php
$this->htmlTag(['lang' => 'en', 'id' => 'example']);
var_dump($this->htmlTag()->getAttributes()); // ['lang' => 'en', 'id' => 'example']
```
### Default Value
The default value is an empty `array` that means no attributes are set.
## Using Namespace
The `HtmlTag` helper can automatically add the [XHTML namespace](http://www.w3.org/1999/xhtml/)
for XHTML documents. To use this functionality, the [`Doctype` helper](doctype.md)
is used.
The namespace is added only if the document type is set to an XHTML type and use
is enabled:
```php
// Set doctype to XHTML
$this->doctype(Laminas\View\Helper\Doctype::XHTML1_STRICT);
// Add namespace to open tag
$this->htmlTag()->setUseNamespaces(true);
// Output
echo $this->htmlTag()->openTag(); //
```
### Get current Value
To get the current value, use the `getUseNamespaces()` method.
```php
$this->htmlTag()->setUseNamespaces(true);
var_dump($this->htmlTag()->getUseNamespaces()); // true
```
### Default Value
The default value is `false` that means no namespace is added as attribute.