(PECL pthreads >= 0.0.33)
Thread::run — This is the method that pthreads runs asynchronously for the programmer.
A run method is just like any other member function, it has access to any members that were set before the call to Thread::start() was made. A run methods return value must be serializeable to be passed as the result of Thread::join(). Unserializeable data will generate a warning for the context that calls Thread::join().
此函数没有参数。