public function removeAttribute($attr)
	{
		if ($this->attributeExists($attr))
		{
			unset($this->_attributes[$attr]);
			return true;
		}

		return false;
	}
public function removeAttribute($attr)
	{
		if ($this->attributeExists($attr))
		{
			unset($this->_attributes[$attr]);
			return true;
		}

		return false;
	}
public function removeAttribute ( $ attr ) { if ( $ this -> attributeExists ( $ attr ) ) { unset ( $ this -> _attributes [ $ attr ] ) ; return true ; } return false ; }
Remove an attribute from the XML node

@param string $attr
@return boolean
Remove an attribute from the XML node