date() confustion

Hi everyone, Does anybody know what might influence the output of the date() function besides date.timezone setting? Running through some code in an app I'm working on, I have this code: $timestamp = time(); $mysqlDatetime = date("Y-m-d G:i:s", $timestamp); Logging these values yields: INSERT TIMESTAMP: 1335414561 INSERT DATE TIME: 2012-04-26 4:29:21 But then from the interactive interpreter on the same box (same php.ini as well): php > echo date("Y-m-d G:i:s", 1335414561); 2012-04-25 22:29:21 I get this same output from another random computer of mine and I've verified date.timezone is consistent in both environments. Something's going on in the first case, but I'm unsure what; any ideas? Your help appreciated as always. -nathan