public function setFirstname($firstname)
	{
		if ( $firstname == $this->getFirstname() ) { return; }

		$this->_values['firstname'] = (string) $firstname;
		$this->setModified();
	}
public function setFirstname($firstname)
	{
		if ( $firstname == $this->getFirstname() ) { return; }

		$this->_values['firstname'] = (string) $firstname;
		$this->setModified();
	}
public function setFirstname ( $ firstname ) { if ( $ firstname == $ this -> getFirstname ( ) ) { return ; } $ this -> _values [ 'firstname' ] = ( string ) $ firstname ; $ this -> setModified ( ) ; }
Sets a new first name of the person.

@param string $firstname New first name of the person
Sets a new first name of the person .