PHP ??? ??

????? ???? ??? ??????. ??? ?????? ? ?? ???? ??? ??? ?? ?????. ? ??? ??? ??? ?? ???? ?? ?????? ?????. ? ?? ??? ?? ???? ???? ?? ???? ??????.

??? ?? ??? ???.

namespace MyExample;

class Lock
{
    private $isLocked = false;

    public function unlock()
    {
        $this->isLocked = false;
        echo 'You unlocked the Lock';
    }

    public function lock()
    {
        $this->isLocked = true;
        echo 'You locked the Lock';
    }

    public function isLocked()
    {
        return $this->isLocked;
    }
}

? Lock ???? ?????? ?? ?? ??? ?? ???? ?????. ??? ???? ?? ??? ? ??? ? ??? $isLocked ???? ?????. lock() ? Unlock() ???? ???? ?? ??? ????? ?? ?? ??? ?????. isLocked() ???? ??? ?? ??? ?????.

? Blueprint?? ??(????)? ???? ??? ??? ??????. ?? ?? ??? ????.

$aLock = new Lock; // Create object from the class blueprint
$aLock->unlock(); // You unlocked the Lock
$aLock->lock(); // You locked the Lock

??? ??? ???? ? ?? ?? ??? ??? ? ????.

$anotherLock = new Lock;
$anotherLock->unlock(); // You unlocked the Lock

??? ? ?? ????? ?? ??? ????? ??? ?? ??? ?? ??? ?????.

var_dump($aLock->isLocked()); // Boolean true
var_dump($anotherLock->isLocked()); // Boolean false

?? ???? ?? ??? ???? ??? Lock ??? ?? ??????. ??? ?? ??? ??? ??? ? ??? ?? ??? ??? ??? ?? ??? ?? ?? ??? ??? ??? ???? ???? ? ????.

Lock ???? ????? ???? ?? ???? ??? ?? ??? ? ????. ?? ??? ?? ???? ??. ?? ?? ? ???? ??? ????.

class Door
{
    private $lock;
    private $connectsTo;

    public function __construct(Lock $lock)
    {
        $this->lock = $lock;
        $this->connectsTo = 'bedroom';
    }

    public function open()
    {
        if($this->lock->isLocked()) {
            echo 'Cannot open Door. It is locked.';
        } else {
            echo 'You opened the Door connecting to: ', $this->connectsTo;
        }
    }
}

? ??? ??? ? ?? ??? ??? ? ????. ?? ??? ?? ?? ?? ?? ??? ????? ?? ? ?? ??? ??? ??? ??? ????. ? ??? ?? ???? ?? ???? ???? ?? ???? ??? ? ????.

class Chest
{
    private $lock;
    private $loot;

    public function __construct(Lock $lock)
    {
        $this->lock = $lock;
        $this->loot = 'Tons of Pieces of Eight';
    }

    public function getLoot()
    {
        if($this->lock->isLocked()) {
            echo 'Cannot get Loot. The chest is locked.';
        } else {
            echo 'You looted the chest and got:', $this->loot;
        }
    }
}

??? ?? ?? ?? ???? ? ???? ??? ????. ???? ???? ?? ?? ?? ?? ?????. ?? ?? ?? ?? ??? ? ??? ??? ???? ?? ?????. ??? Lock ???? ???? ? ??? ?? ?????? ??? ? ?? ?? ????? ?????.

$doorLock = new Lock;
$myDoor = new Door($doorLock);

$chestLock = new Lock;
$myChest new Chest($chestLock);

? ???? ??? ?? ??? ???? $doorLock? ?? ???? ?? ?? ?????. . $chestLock? ?? ???? ??? ??? ?????.

? ?? ?? ??? ???? ???? ?? ????? ?? ???? ??? ??? ???? ?? ?? ?? ??? ???? ??? ???. ?? ?? ??????? ?? ???? ???? ???? ?????? ?????.

? ????? ???? ???? ?? ??? ? ?? ??? ????? ??? ??? ????. ? ??? ???? ?? ??? ?? ???.

?? ?? ?????? ??? ??? ?? ??? ?????? ???? PHP ??? ??? ?? ???? ???? ? ????.

? ??? PHP ???? ??? ?? ???? ?? ?? ????? ?? ???? ???????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!