+ Support ob_start with coroutines

Author: EdmondDantes

coroutine.c

@@ -251,7 +251,7 @@ ZEND_STACK_ALIGNED void async_coroutine_execute(zend_fiber_transfer *transfer)
 
 	/* Call switch handlers for coroutine entering */
 	if (UNEXPECTED(&coroutine->coroutine.switch_handlers != NULL)) {
-		ZEND_COROUTINE_CALL_SWITCH_HANDLERS(&coroutine->coroutine, true, false);
+		ZEND_COROUTINE_ENTER(&coroutine->coroutine);
 	}
 
 	/* Determine the current error_reporting ini setting. */

scheduler.c

@@ -553,6 +553,11 @@ void async_scheduler_launch(void)
 		return;
 	}
 
+	zend_async_call_main_coroutine_start_handlers(&main_coroutine->coroutine);
+	if (UNEXPECTED(EG(exception))) {
+		return;
+	}
+
 	// Copy the main coroutine context
 	main_coroutine->context = *EG(main_fiber_context);
 	// Set the current fiber context to the main coroutine context