How to create constructor with optional parameters? [duplicate]

Answer 1

public function __construct() {
    // allocate your stuff
}

public static function withRow( array $row ) {
    $instance = new self();
    $instance->fill( $row );
    return $instance;
}

protected function fill( array $row ) {
    // fill all properties from array
}

For details check this answer : Best way to do multiple constructors in PHP