note 73543 added to ref.readline

Readline only reads the window size on startup or on SIGWINCH. This means if the window is resized when not in a readline() call, the next call will have odd behavior due to confusion about the window size. The work-around is to force Readline to re-read the window size by sending it SIGWINCH. This is accomplished using the async interface, which installs the signal handler but returns control to PHP. The following function is a drop-in replacement for readline(), but re-reads the window size every time: <? function xreadline($prompt) { global $xreadline, $xreadline_line; $code = '$GLOBALS["xreadline"] = false;' . '$GLOBALS["xreadline_line"] = $line;' . 'readline_callback_handler_remove();'; $cb = create_function('$line', $code); readline_callback_handler_install($prompt, $cb); $signal = defined("SIGWINCH") ? SIGWINCH : 28; posix_kill(posix_getpid(), $signal); $xreadline = true; while ($xreadline) readline_callback_read_char(); return is_null($xreadline_line) ? false : $xreadline_line; } ?> ---- Server IP: 216.194.113.175 Probable Submitter: 216.21.215.250 ---- Manual Page -- http://www.php.net/manual/en/ref.readline.php Edit -- https://master.php.net/note/edit/73543 Del: integrated -- https://master.php.net/note/delete/73543/integrated Del: useless -- https://master.php.net/note/delete/73543/useless Del: bad code -- https://master.php.net/note/delete/73543/bad+code Del: spam -- https://master.php.net/note/delete/73543/spam Del: non-english -- https://master.php.net/note/delete/73543/non-english Del: in docs -- https://master.php.net/note/delete/73543/in+docs Del: other reasons-- https://master.php.net/note/delete/73543 Reject -- https://master.php.net/note/reject/73543 Search -- https://master.php.net/manage/user-notes.php