Are there any built-in solutions in PHP for restricting changes to the data type of a property?

In PHP, there are no built-in solutions for restricting changes to the data type of a property. However, you can achieve this by implementing getter and setter methods for the property and adding type checks within these methods. By doing so, you can ensure that only values of the desired data type are set for the property. 

class MyClass {
    private $myProperty;

    public function setMyProperty($value) {
        if (is_int($value)) {
            $this->myProperty = $value;
        } else {
            throw new Exception('Invalid data type for myProperty. Integer expected.');
        }
    }

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

$obj = new MyClass();
$obj->setMyProperty(10); // Valid
echo $obj->getMyProperty(); // Output: 10

$obj->setMyProperty('string'); // Throws an Exception

Keywords

PHP data type property restriction built-in solution

Related Questions