PHP? ??? ???? ??? ??? ?????

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

? ????? ??? ????, PHP?? ??? ??? ?????, ??? ??? ??? ???????.

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1. PHP? ??? ??????

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

??? trait ???? ???? ????, ? ?? ?? ???? use ???? ???? ???? "???" ? ????.

??? ?:

// Declare a trait
trait Logger {
    public function log($message) {
        echo "Log message: " . $message;
    }
}

// Class using the trait
class User {
    use Logger;

    public function createUser($name) {
        $this->log("User $name has been created.");
    }
}

// Creating an instance of User and using the method from the Logger trait
$user = new User();
$user->createUser("John");  // Outputs: Log message: User John has been created.

?? ??? Logger ???? user ??? ??? ???? log() ???? ???? ????. ?? ?? User ???? ???? ?? ??? ??? ?? ?? ?? ??? ???? ? ????.

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2. PHP?? ??? ???? ??? ??????

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

• ?? ????: ??? ?? ??? ????? ???? ???? ? ????. ?? ?? ??? ???? ?? ???? ??????.
• ?? ?? ??: PHP? ?? ??? ???? ????. ?, ???? ? ??? ????? ?? ??? ? ????. ??? ???? ?? ?? ???? ??? ?? ?? ?? ????? ??? ???? ? ????.
• ???? ??: ??? ?? ??? ?????. ?? ??? ???? ???? ???? ???? ???? ???? ? ????.

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3. ??? ?? ??

• ??? ???: ???? ?? ??? ???? ??? ? ????. ??? ??? ??, ?? ?? ???? ? ????.
• ??? ??? ??: ??? ???? ?? ? ??? ??? ???? ????? ???? ???? ??? ? ????.
• ??? ???: ??? ???? ???? ??? ??? ??? ??? ?? ???? ???? ?? ???? ???? ??? ???? ??????. ??? ?? ? ?? ??? ???? ??? PHP? ????? ??? ?? ????.

??? ???? ?:

// Declare a trait
trait Logger {
    public function log($message) {
        echo "Log message: " . $message;
    }
}

// Class using the trait
class User {
    use Logger;

    public function createUser($name) {
        $this->log("User $name has been created.");
    }
}

// Creating an instance of User and using the method from the Logger trait
$user = new User();
$user->createUser("John");  // Outputs: Log message: User John has been created.

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4. ??? ??? ???

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

?. ?? ??? ?? ??

• ??: PHP? ?? ??? ?????. ?, ???? ??? ?? ???? ??? ? ????. ??? ?? ?? ???? ?? ???? ???? ??? ???? ??-?? ??? ?????.

?:

trait Logger {
    public function log($message) {
        echo "Log message from Logger: " . $message;
    }
}

class User {
    use Logger;

    // Override the log method in the trait
    public function log($message) {
        echo "Custom log message: " . $message;
    }
}

$user = new User();
$user->log("User created.");  // Outputs: Custom log message: User created.

• ??: PHP? ???? ???? ?? ??? ???? ??? ??? ???? ??? ? ????. ?? ?? ?? ???? ?? ???? ?? ??? ?? ??? ???? ???? ??? ?????.

?:

  class Animal {
      public function speak() {
          echo "Animal sound!";
      }
  }

  class Dog extends Animal {
      public function fetch() {
          echo "Fetching the ball!";
      }
  }

?. ?? ????

• ??: ??? ?? ?? ???? ?? ???? ???? ??? ???? ? ????. ??? ?? ???? ? ?????? ???? ? ???? ???? ???? ????? ??? ?? ??? ??? ? ????.

• ??: ??? ??? ?? ???? ???? ?? ??? ??? ?????. ??? ??? ?? ??? ??? ? ???? ??? ?? ?? ?? ??? ? ?? ?? ???? ?????.

?. ?? ???? ??

• ??: ????? ???? ?? ???? ?? ???? ?? ??? ??? ???? ???? ? ????. ??? ??? ??? ?????, ??? ??? ??? ???? ?????.

• ??: ??? ???? ?? ??? ??? ??? ???? ????. ??, ??? ???? ??-?? ??? ???? ?? ?? ??? ??? ? ?? ??? ?????. ?? ??? ??????? ???? ??? ???? ?? ?? ????.

?. ??? ??

• ??: ?? ???? ???? ???? ???? ??? ? ???, ?? ???? parent::__construct()? ?? ??? ???? ??? ? ????.

• ??: ??? ???? ?? ? ????. ??? ???? ???? ???? ??? ?? ?? ???? ???? ???. ??? ??? ??? ??? ???? ???? ??? ? ????.

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5. ??? ??? ?? ???? ?

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

// Declare a trait
trait Logger {
    public function log($message) {
        echo "Log message: " . $message;
    }
}

// Class using the trait
class User {
    use Logger;

    public function createUser($name) {
        $this->log("User $name has been created.");
    }
}

// Creating an instance of User and using the method from the Logger trait
$user = new User();
$user->createUser("John");  // Outputs: Log message: User John has been created.

? ??? Dog ???? Animal? talk() ???? ???? Logger ??? ???? ???? ?????.

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6. ?? ??? ??

• ?? ???: ??? ???? ?? ????? ?? ?? ??? ???? ???? ? ????.
• ???: ??? ?? ??? ??? ?? ??? ???? ???? ??? ?? ??? ? ?? ???? ?????.
• ?? ?? ?? ??: ??? ???? ????? ??? ?? ?? ??? ??? ?? ?? ??? ?? ??? ??? ? ????.

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??

PHP?

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

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