javascript 转换为UNIX时间戳，PHP可用

//转换为UNIX时间戳
function strtotimestamp(datestr)
{
    var new_str = datestr.replace(/:/g,"-");
    new_str = new_str.replace(/ /g,"-");
    var arr = new_str.split("-");
    var datum = new Date(Date.UTC(arr[0],arr[1]-1,arr[2],arr[3]-8,arr[4],arr[5]));
    return (datum.getTime()/1000);  //为PHP所用
    }
//UNIX时间戳转换为字符串
function timestamptostr(timestamp) {
     d = new Date(timestamp.getTime());
     var jstimestamp = (d.getFullYear())+"-"+(d.getMonth()+1)+"-"+(d.getDate())+" "+(d.getHours())+":"+(d.getMinutes())+":"+(d.getSeconds());
     return jstimestamp;
    }
javascript timestamp 和PHP 时间戳 差 8个小时
strtotimestamp("2010-01-01  08:00:00");          //PHP输出 2010-01-01  00:00:00
 strtotimestamp("2010-01-11  23:59:59")+(8*60*60);  //PHP输出 2010-01-11  23:59:59