php upgrade to 5.3 sites show this err

[bhanuprasad1981]

phpBB Debug] PHP Notice: in file /viewtopic.php on line 1105: date()
> [function.date]: 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 'America/New_York' for 'EST/-5.0/no DST'
> instead
> [phpBB Debug] PHP Notice: in file /viewtopic.php on line 1105: getdate()
> [function.getdate]: 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 'America/New_York' for 'EST/-5.0/no DST'
> instead
> [phpBB Debug] PHP Notice: in file /viewtopic.php on line 1229: date()
> [function.date]: 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 'America/New_York' for 'EST/-5.0/no DST'
> instead
> [phpBB Debug] PHP Notice: in file /viewtopic.php on line 1229: date()
> [function.date]: 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 'America/New_York' for 'EST/-5.0/no DST'
> instead
> [phpBB Debug] PHP Notice: in file /includes/functions.php on line 4605:
> Cannot modify header information - headers already sent by (output started
> at /includes/functions.php:3755)
> [phpBB Debug] PHP Notice: in file /includes/functions.php on line 4607:
> Cannot modify header information - headers already sent by (output started
> at /includes/functions.php:3755)
> [phpBB Debug] PHP Notice: in file /includes/functions.php on line 4608:
> Cannot modify header information - headers already sent by (output started
> at /includes/functions.php:3755)
> [phpBB Debug] PHP Notice: in file /includes/functions.php on line 4609:
> Cannot modify header information - headers already sent by (output started
> at /includes/functions.php:3755)

 

[bhanuprasad1981]

my time zone is "posixrules"

 

[NiteWave]

in php.ini, add
date.timezone="posixrules"

then restart lsws