[PHP] interface Opcje

[plej]

[PHP] pobierz, plaintext 
interface Band {
  public function getName();
  public function GetGenre();
  public function addMusician();
  public function getMusicians();
}
 
interface Musician {
  public function addInstrument();
  public function getInstruments();
 
  public function assignToBand();
  public function getMusicianType();
}
 
interface Instrument {
  public function getName();
  public function getCategory();
}
 
class Guitarist implements Musician {
  private $last;
  private $first;
  private $musicianType;
 
  private $instruments;
  private $bandReference;
 
  function __construct($first, $last) {
    $this->last = $last;
    $this->first = $first;
    $this->instruments = array();
    $this->musicianType = "gitarzysta";
  }
 
  public function getName() {
    return $this->first . " ". $this->last;
  }
 
  public function addInstrument(Instrument $instrument) {
    array_push($this->instruments, $instrument);
  }
 
  public function getInstruments() {
    return $this->instruments;
  }
 
  public function getBand() {
    return $this->$bandReference;
  }
 
  public function assignBand(Band $band) {
    $this->$bandReference = $band;
  }
 
  public function getMusicianType() {
    return $this->musicianType;
  }
 
  public function setMusicianType($musicianType) {
    $this->musicianType = $musicianType;
  }
}
 
class LeadGuitarist extends Guitarist {
  function __construct($last, $first) {
    parent::__construct($last, $first);
    $this->setMusicianType("główny gitarzysta");
  }
}
 
class RockBand implements Band {
  private $bandName;
  private $bandGenre;
  private $musicians;
 
  function __construct($bandName) {
    $this->bandName = $bandName;
    $this->musicians = array();
    $this->bandGenre = "rock";
  }
 
  public function getName() {
    return $this->bandName;
  }
 
  public function getGenre() {
    return $this->bandGenre;
  }
 
  public function addMusician(Musician $musician) {
    array_push($this->musicians, $musician);
    $musicians->assignToBand($this);
  }
 
  public function getMusicians() {
    return $this->musicians;
  }
}
 
class Guitar implements Instrument {
 
  private $name;
  private $category;
 
  function __construct($name) {
    $this->name = $name;
    $this->category = "gitary";
  }
 
  public function getName() {
    return $this->name;
  }
 
  public function getCategory() {
    return $this->category;
  }
}
 
// test Obiektów.
$band = new RockBand("Czerwone Zmienne");
$bandMemberA = new Guitarist("Michał", "Zmiennoprzecinkowy");
$bandMemberB = new LeadGuitarist("Grzegorz", "Całkowity");
 
$bandMemberA->addInstrument(new Guitar("Gibson Les Paul"));
$bandMemberB->addInstrument(new Guitar("Fender Stratocaster"));
$bandMemberB->addInstrument(new Guitar("Hondo H-77"));
 
$band->addMusician($bandMemberA);
$band->addMusician($bandMemberB);
 
foreach($band->getMusicians() as $musician) {
  echo "Muzyk" .$musician->getName() ."<br>";
  echo "to " .$musician->getMusicianType() ."<br>";
  echo "w zespole grającym " .$musician->getBand()->getGenre() ."<br>";
  echo "o nazwie " .$musician->getBand()->getName() ."<br>";
 
  foreach($musician->getInstruments() as $instrument) {
    echo "Jego instrument to " .$instrument->getName() ." ";
    echo "(" .$instrument->getCategory() .")<br>";
  }
  echo "<p>";
}
[PHP] pobierz, plaintext 

Fatal error: Declaration of Guitarist::addInstrument() must be compatible with that of Musician::addInstrument() in /opt/lampp/htdocs/nauka/index.php on line 26

Cześć
U góry kod php i błąd wie ktoś w czym problem tu jest? bo ja nie umiem sb z tym poradzić:/
obiektowego uczę się pare dni dopiero jak coś...
Z góry thx.


EDIT:

linia 26 nie,

[PHP] pobierz, plaintext 
class Guitarist implements Musician {
[PHP] pobierz, plaintext 

czyli linia 21 to błąd.
ten fragment porostu nie ma znaczników php i zapominałem się

Ten post edytował plej 7.06.2011, 09:33:38