How can a constructor be properly defined in PHP classes to avoid errors?

To properly define a constructor in PHP classes and avoid errors, you should ensure that the constructor method is named "__construct" and that it initializes any class properties or performs necessary setup. Additionally, the constructor should not return any value. By following these conventions, you can create a well-defined constructor that initializes objects correctly.

class MyClass {
    private $property;

    public function __construct() {
        $this->property = 'initialized';
    }
}