TIL: PHP Array plus operator
I learned something today I learned a new thing today while reading through someone else’s code (nikic/FastRoute if you’re interested). I was reading through a function and noticed them using a varient of the + operator with 2 arrays: <?php // ... function cachedDispatcher(callable $routeDefinitionCallback, array $options = []): Dispatcher { $options += [ 'routeParser' => RouteParser\Std::class, 'dataGenerator' => DataGenerator\MarkBased::class, 'dispatcher' => Dispatcher\MarkBased::class, 'routeCollector' => RouteCollector::class, 'cacheDisabled' => false, 'cacheDriver' => FileCache::class, ]; // ....