readline_callback_handler_install
Initializes the readline callback interface and terminal, prints the prompt and returns immediately
&reftitle.description;
boolreadline_callback_handler_install
stringprompt
callbackcallback
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.
&reftitle.returnvalues;
&return.success;
&reftitle.examples;
Readline Callback Interface Example
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();
}
}
echo "Prompting disabled. All done.\n";
?>
]]>
&reftitle.seealso;
readline_callback_handler_remove,
readline_callback_read_char&listendand;
stream_select.