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Showing content from https://www.yiiframework.com/doc/api/2.0/yii-web-xmlresponseformatter below:

XmlResponseFormatter, yii\web\XmlResponseFormatter | API Documentation for Yii 2.0

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The Content-Type header for the response

The XML document, serves as the root of the document tree

The name of the elements that represent the array elements with numeric keys.

If true, converts object tags to lowercase, $useObjectTags must be enabled

The name of the root element. If set to false, null or is empty then no root tag should be added.

Since 2.0.44 URI namespace could be specified by passing [namespace, tag name] array.

Whether to interpret objects implementing the Traversable interface as arrays. Defaults to true.

Hide inherited methods

Defined in: yii\base\Component::__call()

Calls the named method which is not a class method.

This method will check if any attached behavior has the named method and will execute it if available.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

Source code

                public function __call($name, $params)
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $object) {
        if ($object->hasMethod($name)) {
            return call_user_func_array([$object, $name], $params);
        }
    }
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}

Defined in: yii\base\Component::__clone()

This method is called after the object is created by cloning an existing one.

It removes all behaviors because they are attached to the old object.

Source code

                public function __clone()
{
    $this->_events = [];
    $this->_eventWildcards = [];
    $this->_behaviors = null;
}

Defined in: yii\base\BaseObject::__construct()

Constructor.

The default implementation does two things:

Initializes the object with the given configuration $config.
Call init().

If this method is overridden in a child class, it is recommended that

the last parameter of the constructor is a configuration array, like $config here.
call the parent implementation at the end of the constructor.

public void __construct ( $config = [] ) $config array

Name-value pairs that will be used to initialize the object properties

Source code

                public function __construct($config = [])
{
    if (!empty($config)) {
        Yii::configure($this, $config);
    }
    $this->init();
}

Defined in: yii\base\Component::__get()

Returns the value of a component property.

This method will check in the following order and act accordingly:

a property defined by a getter: return the getter result
a property of a behavior: return the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $component->property;.

See also __get().

Source code

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        
        $this->$setter($value);
        return;
    } elseif (strncmp($name, 'on ', 3) === 0) {
        
        $this->on(trim(substr($name, 3)), $value);
        return;
    } elseif (strncmp($name, 'as ', 3) === 0) {
        
        $name = trim(substr($name, 3));
        if ($value instanceof Behavior) {
            $this->attachBehavior($name, $value);
        } elseif ($value instanceof \Closure) {
            $this->attachBehavior($name, call_user_func($value));
        } elseif (isset($value['__class']) && is_subclass_of($value['__class'], Behavior::class)) {
            $this->attachBehavior($name, Yii::createObject($value));
        } elseif (!isset($value['__class']) && isset($value['class']) && is_subclass_of($value['class'], Behavior::class)) {
            $this->attachBehavior($name, Yii::createObject($value));
        } elseif (is_string($value) && is_subclass_of($value, Behavior::class, true)) {
            $this->attachBehavior($name, Yii::createObject($value));
        } else {
            throw new InvalidConfigException('Class is not of type ' . Behavior::class . ' or its subclasses');
        }
        return;
    }
    
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = $value;
            return;
        }
    }
    if (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}

Defined in: yii\base\Component::__unset()

Sets a component property to be null.

This method will check in the following order and act accordingly:

a property defined by a setter: set the property value to be null
a property of a behavior: set the property value to be null

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($component->property).

Source code

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
        return;
    }
    
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = null;
            return;
        }
    }
    throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}

Source code

                public function attachBehavior($name, $behavior)
{
    $this->ensureBehaviors();
    return $this->attachBehaviorInternal($name, $behavior);
}

public void attachBehaviors ( $behaviors ) $behaviors array

List of behaviors to be attached to the component

Source code

                public function attachBehaviors($behaviors)
{
    $this->ensureBehaviors();
    foreach ($behaviors as $name => $behavior) {
        $this->attachBehaviorInternal($name, $behavior);
    }
}

Defined in: yii\base\Component::behaviors()

Returns a list of behaviors that this component should behave as.

Child classes may override this method to specify the behaviors they want to behave as.

The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:

'behaviorName' => [
    'class' => 'BehaviorClass',
    'property1' => 'value1',
    'property2' => 'value2',
]

Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.

Behaviors declared in this method will be attached to the component automatically (on demand).

Source code

                public function behaviors()
{
    return [];
}

Recursively adds data to XML document.

Source code

                protected function buildXml($element, $data)
{
    if (
        is_array($data) ||
        ($data instanceof \Traversable && $this->useTraversableAsArray && !$data instanceof Arrayable)
    ) {
        foreach ($data as $name => $value) {
            if (is_int($name) && is_object($value)) {
                $this->buildXml($element, $value);
            } elseif (is_array($value) || is_object($value)) {
                $child = $this->dom->createElement($this->getValidXmlElementName($name));
                $element->appendChild($child);
                $this->buildXml($child, $value);
            } else {
                $child = $this->dom->createElement($this->getValidXmlElementName($name));
                $child->appendChild($this->dom->createTextNode($this->formatScalarValue($value)));
                $element->appendChild($child);
            }
        }
    } elseif (is_object($data)) {
        if ($this->useObjectTags) {
            $name = StringHelper::basename(get_class($data));
            if ($this->objectTagToLowercase) {
                $name = strtolower($name);
            }
            $child = $this->dom->createElement($name);
            $element->appendChild($child);
        } else {
            $child = $element;
        }
        if ($data instanceof Arrayable) {
            $this->buildXml($child, $data->toArray());
        } else {
            $array = [];
            foreach ($data as $name => $value) {
                $array[$name] = $value;
            }
            $this->buildXml($child, $array);
        }
    } else {
        $element->appendChild($this->dom->createTextNode($this->formatScalarValue($data)));
    }
}

Defined in: yii\base\Component::canGetProperty()

Returns a value indicating whether a property can be read.

A property can be read if:

the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
the class has a member variable with the specified name (when $checkVars is true);
an attached behavior has a readable property of the given name (when $checkBehaviors is true).

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) $name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property can be written

Source code

                public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canSetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}

Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.

Source code

                public static function className()
{
    return get_called_class();
}

Source code

                public function detachBehavior($name)
{
    $this->ensureBehaviors();
    if (isset($this->_behaviors[$name])) {
        $behavior = $this->_behaviors[$name];
        unset($this->_behaviors[$name]);
        $behavior->detach();
        return $behavior;
    }
    return null;
}

Source code

                public function detachBehaviors()
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $name => $behavior) {
        $this->detachBehavior($name);
    }
}

Source code

                public function ensureBehaviors()
{
    if ($this->_behaviors === null) {
        $this->_behaviors = [];
        foreach ($this->behaviors() as $name => $behavior) {
            $this->attachBehaviorInternal($name, $behavior);
        }
    }
}

Formats the specified response.

Source code

                public function format($response)
{
    $charset = $this->encoding === null ? $response->charset : $this->encoding;
    if (stripos($this->contentType, 'charset') === false) {
        $this->contentType .= '; charset=' . $charset;
    }
    $response->getHeaders()->set('Content-Type', $this->contentType);
    if ($response->data !== null) {
        $this->dom = new DOMDocument($this->version, $charset);
        if (!empty($this->rootTag)) {
            if (is_array($this->rootTag)) {
                $root = $this->dom->createElementNS($this->rootTag[0], $this->rootTag[1]);
            } else {
                $root = $this->dom->createElement($this->rootTag);
            }
            $this->dom->appendChild($root);
            $this->buildXml($root, $response->data);
        } else {
            $this->buildXml($this->dom, $response->data);
        }
        $response->content = $this->dom->saveXML();
    }
}

Formats scalar value to use in XML text node.

Source code

                protected function formatScalarValue($value)
{
    if ($value === true) {
        return 'true';
    }
    if ($value === false) {
        return 'false';
    }
    if (is_float($value)) {
        return StringHelper::floatToString($value);
    }
    return (string) $value;
}

Source code

                public function getBehavior($name)
{
    $this->ensureBehaviors();
    return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}

Source code

                public function getBehaviors()
{
    $this->ensureBehaviors();
    return $this->_behaviors;
}

Returns element name ready to be used in DOMElement if name is not empty, is not int and is valid.

Falls back to $itemTag otherwise.

Source code

                protected function getValidXmlElementName($name)
{
    if (empty($name) || is_int($name) || !$this->isValidXmlName($name)) {
        return $this->itemTag;
    }
    return $name;
}

Source code

                public function hasEventHandlers($name)
{
    $this->ensureBehaviors();
    if (!empty($this->_events[$name])) {
        return true;
    }
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
            return true;
        }
    }
    return Event::hasHandlers($this, $name);
}

Defined in: yii\base\Component::hasMethod()

Returns a value indicating whether a method is defined.

A method is defined if:

the class has a method with the specified name
an attached behavior has a method with the given name (when $checkBehaviors is true).

public boolean hasMethod ( $name, $checkBehaviors = true ) $name string

The property name

$checkBehaviors boolean

Whether to treat behaviors' methods as methods of this component

return boolean

Whether the method is defined

Source code

                public function hasMethod($name, $checkBehaviors = true)
{
    if (method_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->hasMethod($name)) {
                return true;
            }
        }
    }
    return false;
}

Defined in: yii\base\Component::hasProperty()

Returns a value indicating whether a property is defined for this component.

A property is defined if:

the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
the class has a member variable with the specified name (when $checkVars is true);
an attached behavior has a property of the given name (when $checkBehaviors is true).