php tomezone related troubleshooting

Warning: socket_bind() [function.socket-bind]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Calcutta' for 'IST/5.0/no DST' instead in /var/www/chat_php.php on line 19



solution:-

try this
 

date_default_timezone_set('Asia/Calcutta');
 



At beginning your php file.