* @license http://creativecommons.org/licenses/MIT/ MIT
* @link https://gist.github.com/855985
*/
class Services_Twilio_Twiml
{
protected $element;
/**
* Constructs a Twiml response.
*
* @param SimpleXmlElement|array $arg:
* - the element to wrap
* - attributes to add to the element
* - if null, initialize an empty element named 'Response'
*/
public function __construct($arg = null)
{
switch (true) {
case $arg instanceof SimpleXmlElement:
$this->element = $arg;
break;
case $arg === null:
$this->element = new SimpleXmlElement('');
break;
case is_array($arg):
$this->element = new SimpleXmlElement('');
foreach ($arg as $name => $value) {
$this->element->addAttribute($name, $value);
}
break;
default:
throw new TwimlException('Invalid argument');
}
}
/**
* Converts method calls into Twiml verbs.
*
* A basic example:
*
* php> print $this->say('hello');
* hello
*
* An example with attributes:
*
* php> print $this->say('hello', array('voice' => 'woman'));
* hello
*
* You could even just pass in an attributes array, omitting the noun:
*
* php> print $this->gather(array('timeout' => '20'));
*
*
* @param string $verb The Twiml verb.
* @param array $args:
* - (noun string)
* - (noun string, attributes array)
* - (attributes array)
*
* @return SimpleXmlElement A SimpleXmlElement
*/
public function __call($verb, array $args)
{
list($noun, $attrs) = $args + array('', array());
if (is_array($noun)) {
list($attrs, $noun) = array($noun, '');
}
$child = empty($noun)
? $this->element->addChild(ucfirst($verb))
: $this->element->addChild(ucfirst($verb), $noun);
foreach ($attrs as $name => $value) {
$child->addAttribute($name, $value);
}
return new self($child);
}
/**
* Returns the object as XML.
*
* @return string The response as an XML string
*/
public function __toString()
{
$xml = $this->element->asXml();
return str_replace(
'',
'', $xml);
}
}