note 114608 added to function.ncurses-getch

ncurses_getch() will block if there is no input available. Using fgets() together with stream_set_blocking() has been proposed for non-blocking input, however, fgets() returns escape sequences for cursor, function, and other special keys. Interpreting these is not trivial as the escape sequences depend on the terminal/emulation used. A possible solution is to use stream_select() to find out whether input is available and then read it with ncurses_getch(). <?php function getch_nonblock($timeout) { $read = array(STDIN); $null = null; // stream_select() uses references, thus variables are necessary for the first 3 parameters if(stream_select($read,$null,$null,floor($timeout / 1000000),$timeout % 1000000) != 1) return null; return ncurses_getch(); } while(true) { $key = getch_nonblock(1000000); if(is_null($key)) { // do something useful here continue; } if($key == NCURSES_KEY_F10) break; // Quit on F10 } ?> Low timeout values can yield high CPU usage of your script, so set the timeout as high as possible for your application. ---- Server IP: 213.172.110.14 Probable Submitter: 79.204.62.204 ---- Manual Page -- http://php.net/manual/en/function.ncurses-getch.php Edit -- https://master.php.net/note/edit/114608 Del: integrated -- https://master.php.net/note/delete/114608/integrated Del: useless -- https://master.php.net/note/delete/114608/useless Del: bad code -- https://master.php.net/note/delete/114608/bad+code Del: spam -- https://master.php.net/note/delete/114608/spam Del: non-english -- https://master.php.net/note/delete/114608/non-english Del: in docs -- https://master.php.net/note/delete/114608/in+docs Del: other reasons-- https://master.php.net/note/delete/114608 Reject -- https://master.php.net/note/reject/114608 Search -- https://master.php.net/manage/user-notes.php