Sets up a readline callback interface then prints
prompt and immediately returns. The
callback function takes one parameter; the user
input returned. Calling this function twice without removing the previous
callback interface will automatically and conveniently overwrite the old
interface.
The callback feature is useful when combined with
stream_select() as it allows interleaving of IO and
user input, unlike readline().
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример 1. Readline Callback Interface Example
<?php function rl_callback($ret) { global $c, $prompting;
echo "You entered: $ret\n"; $c++;
if ($c > 10) { $prompting = false; readline_callback_handler_remove(); } else { readline_callback_handler_install("[$c] Enter something: ", 'rl_callback'); } }
$c = 1; $prompting = true;
readline_callback_handler_install("[$c] Enter something: ", 'rl_callback');
while ($prompting) { $n = stream_select($r = array(STDIN), $w = null, $e = null, null); if ($n && in_array(STDIN, $r)) { // read a character, will call the callback when a newline is entered readline_callback_read_char(); } }