readline_callback_read_char

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

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

说明

readline_callback_read_char ( ) : void

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.

返回值

没有返回值。

范例

See readline_callback_handler_install() for an example of how to use the readline callback interface.

参见

User Contributed Notes

thflori 23-Aug-2018 06:30
It seems this function is not blocking anymore:

<?php

do {
 
readline_callback_read_char();
 
$str = readline_info('line_buffer');
  echo
'.';
} while (
strlen($str) < 10);

echo
PHP_EOL . $str . PHP_EOL;

?>
Quis-NOZPAM- at omicidio-NOZPAM- dot nl 02-Aug-2006 04:43
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
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