class MyDynamicClass { public function hello() { echo "Hello, World!"; } } $className = 'MyDynamicClass'; $classCode = 'class ' . $className . ' {public function hello() {echo "Hello, World!";}}'; // Define the new class defineClass($className, $classCode); // Create an instance of the new class $instance = new $className(); // Call the hello method $instance->hello(); // Output: "Hello, World!"
$className = 'MyDynamicClass'; $classCode = file_get_contents('MyDynamicClass.php'); // Define the new class defineClass($className, $classCode); // Create an instance of the new class $instance = new $className(); // Call a method on the new class $instance->doSomething();In this example, we define a new class named `MyDynamicClass` by reading the class code from a file. We then use the `defineClass` method to define it at runtime, create an instance of the new class, and call one of its methods. Determining the package library for the defineClass method is impossible without additional context, as the ClassLoader could be a part of any number of libraries or frameworks.