002+
003+ Fatal error: Uncaught RuntimeException: usleep is not suitable for use in multi threaded applications, use synchronized Threaded::wait in %s/001.php:10
004+ Stack trace:
005+ #0 %s/001.php(10): usleep(0)
006+ #1 {main}
002- Export key to file
003- Load key from file - array syntax
004- Load key using direct syntax
005- Load key manually and use string syntax
006- OK!
007+ thrown in %s/001.php on line 10