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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 回调接口

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,这个函数将通知使用 readline_callback_handler_install() 安装的 readline 回调接口,并且 这一个行已经准备输入。

参数

此函数没有参数。

返回值

没有返回值。

示例

有关如何使用 readline 回调接口的示例,参见 readline_callback_handler_install()

参见

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User Contributed Notes 2 notes

up
1
thflori
5 years ago
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;

?>
up
-1
Quis-NOZPAM- at omicidio-NOZPAM- dot nl
17 years ago
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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