15 十二章 日期

<?php
    //默认设置为上海时区
    date_default_timezone_set('Asia/Shanghai');

    //1 checkdate 验证日期
    echo "april 31,2007".(checkdate(4,31,27)? 'valid':'invalid');
    echo "";

    //2 格式化日期和时间 date
    echo date("m-d-Y");
    echo "";
    echo "the time is".date("h:i:s");
    echo "";

    //了解当前时间的更多信息 gettimeofday
    date_default_timezone_set('Asia/Shanghai');
    $time = gettimeofday();
    $GMToffset = $time['minuteswest'] / 60;
    printf("server location is %d hours west of GMT.",$GMToffset);
    echo "";

    //时间戳
    echo time();
    echo "";
    echo date("F d,Y h:i:s",time());
?>

april 31,2007invalid
08-25-2011
the time is06:04:06
server location is -8 hours west of GMT.
1314266646
August 25,2011 06:04:06