PHP有关时间戳的操作

我们在利用PHP开发程序的时候,总会遇到一些比较时间的困扰,现在我列举一下几种我们开发过程中常用的操作时间戳的实例:

".$month_last."
";$date = date( "Y-m-d" );list( $year, $month, $day ) = explode( '-', $date ); //分割后$year = '2012', $month = '10', $day = '31'//将字符串转换成整型$year = intval( $year );$month = intval( $month );$day = intval( $day );$month_day = date( "t", mktime( 0, 0, 0, $month, $day, $year ) );//该月一共有几天echo $month_day."
";$month_first = date( "Y-m-d", mktime(0, 0, 0, $month, 1, $year) );$month_last = date( "Y-m-d", mktime(0, 0, 0, $month, $month_day, $year) );//该月的总天数其实就是该的最后一天echo $month_first."
".$month_last."
";