How can the use of __autoload in PHP lead to limitations in reusability and compatibility with external components?

Using __autoload in PHP can lead to limitations in reusability and compatibility with external components because it relies on a single function to load classes, which may conflict with other autoloaders or cause issues when integrating with third-party libraries that also use autoloaders. To solve this issue, it's recommended to use spl_autoload_register() instead, which allows registering multiple autoload functions to prevent conflicts and ensure compatibility with external components.

spl_autoload_register(function($class) {
    // Your autoload logic here
});