What is the EVA principle in PHP development and how can it be applied to improve code readability and maintainability?

The EVA principle in PHP development stands for Encapsulate, Validate, and Assert. This principle emphasizes encapsulating data and behavior within classes, validating input data to ensure it meets the required criteria, and asserting the correctness of data and behavior within the code. Example PHP code snippet implementing the EVA principle: 

class User {
  private $name;

  public function setName($name) {
    if (!is_string($name)) {
      throw new InvalidArgumentException('Name must be a string');
    }
    $this->name = $name;
  }

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

$user = new User();
$user->setName('John Doe');
echo $user->getName();

Keywords

EVA principle PHP development code readability maintainability PHP functions

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