How can ReflectionClass be used to create instances of dynamically specified classes in PHP?

ReflectionClass can be used to create instances of dynamically specified classes in PHP by first creating an instance of ReflectionClass for the desired class, and then using the newInstance() method to create a new instance of that class. This allows for dynamically creating instances of classes based on user input or other runtime conditions.

// Dynamically create an instance of a specified class using ReflectionClass
$class_name = 'ClassName'; // Specify the class name dynamically
if (class_exists($class_name)) {
    $reflection_class = new ReflectionClass($class_name);
    $instance = $reflection_class->newInstance();
    // $instance is now an instance of the dynamically specified class
} else {
    echo 'Class does not exist';
}