What are the best practices for assigning objects in PHP constructors to avoid errors like the one mentioned in the forum thread?

The issue mentioned in the forum thread is likely related to assigning objects in PHP constructors without proper error handling. To avoid errors, it's best practice to check if the object being passed to the constructor is of the correct type before assigning it to a property. This can be done using type hinting and instanceof checks.

class MyClass {
    private $dependency;

    public function __construct($dependency) {
        if (!$dependency instanceof DependencyClass) {
            throw new InvalidArgumentException('Dependency must be an instance of DependencyClass');
        }

        $this->dependency = $dependency;
    }
}