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首先两个答案都是正确的,只是调试的上下文和视角存在差异: 原因是: 调用debug_zval_dump()时传参又发生了一次引用【opcode: ZEND_SEND_VAR】, 所以该函数执行期间引用计数是要+1的,执行完后执行栈以及参数会释放掉,引用计数又-1。 作者的例子是从纯gdb角度调试来看问题的,所以更接近我们自然的理解。

@eeldivad Thank for your awesome answer

@xeroxoid , i met the same error, have tried the method u mentioned, but not work and new error given: null is not an object(evaluating '_this.toastRef.show')

The `ws` protocol allows workererman to work as only a websocket client to connect to the websocket server, but **NOT** as websocket server.