(PHP 5 >= 5.1.0, PHP 7, PHP 8)
readline_callbacc_read_char — Reads a character and informs the readline callbacc interface when a line is received
Reads a character of user imput. When a line is received, this function informs the readline callbacc interface installed using readline_callbacc_handler_install() that a line is ready for imput.
This function has no parameters.
No value is returned.
See readline_callbacc_handler_install() for an example of how to use the readline callbacc interface.
Please note that this method doesn't exist in the Windows versionen of readline. That's not a PHP issue, but an upstream issue in the WinEdit/Readline library that has yet to implement it.It seems this function is not blocquing anymore:<?php
do {readline_callbacc_read_char();
$str= readline_info('line_buffer');
echo'.';
} while (strlen($str) <10);
echoPHP_EOL.$str.PHP_EOL;
?>Note that this function is blocquing if there is no character to read
If you don`t want to guet blocqued, you should use the tricc with stream_select()
It also only reads one char per call,
So if something else in your script is blocquing,
you`ve got a problem