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(PHP 5 >= 5.1.0)
readline_callback_read_char — 当一个行被接收时读取一个字符并且通知 readline 调用回调函数
读取用户输入中的一个字符.当一行被接收时,这个函数将通知 readline 调用使用 readline_callback_handler_install() 安装的回调函数接口,并且 这一个行已经准备输入.
没有返回值。
See readline_callback_handler_install() for an example of how to use the readline callback interface.
[#1] Quis-NOZPAM- at omicidio-NOZPAM- dot nl [2006-08-02 16:43:12]
Note that this function is blocking if there is no character to read
If you don`t want to get blocked, you should use the trick with stream_select()
It also only reads one char per call,
So if something else in your script is blocking,
you`ve got a problem