How does the ability to add properties at runtime in PHP impact code readability and maintainability?

Adding properties at runtime in PHP can make code harder to read and maintain because it introduces dynamic behavior that may not be immediately obvious to other developers. It can also lead to unexpected side effects and make debugging more challenging. To improve readability and maintainability, it's best to define all properties explicitly in the class definition. 

class User {
    public $name;
    public $email;
    
    public function __construct($name, $email) {
        $this->name = $name;
        $this->email = $email;
    }
}

Keywords

runtime properties PHP code readability maintainability

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