The OO 'stuff' in PHP is far better. Notably, Traits, Statics and Testing.

Java (and JUnit) do not work well with static methods/classes, when it's unironically the most effective way to limit state. In PHP you can create a static class, that has static utility methods. Now you can ensure you have no side effects - unless accessing static properties somewhere, ofc. Then PHPUnit has no trouble helping you test these. It's a huge improvement over the acrobatics of booting up Spring to manage a singleton (which isn't the same thing as a static class) whenever you want access to those real static methods.