viz1 Warning: fopen(host.txt): failed to open stream: No such file or directory in /www/wwwroot/gr.vn.ua/demo3/5/fig1.php on line 5 Warning: fread() expects parameter 1 to be resource, boolean given in /www/wwwroot/gr.vn.ua/demo3/5/fig1.php on line 6 Warning: fclose() expects parameter 1 to be resource, boolean given in /www/wwwroot/gr.vn.ua/demo3/5/fig1.php on line 8