PHP时间工具种

PHP时间工具类

<?php class DateUtils {
	function checkDate($date) { //检查日期是否合法日期
		$dateArr = explode ( "-", $date );
		if (is_numeric ( $dateArr [0] ) && is_numeric ( $dateArr [1] ) && is_numeric ( $dateArr [2] )) {
			return checkdate ( $dateArr [1], $dateArr [2], $dateArr [0] );
		}
		return false;
	}
	
	function checkTime($time) { //检查时间是否合法时间  
		$timeArr = explode ( ":", $time );
		if (is_numeric ( $timeArr [0] ) && is_numeric ( $timeArr [1] ) && is_numeric ( $timeArr [2] )) {
			if (($timeArr [0] >= 0 && $timeArr [0] = 0 && $timeArr [1] = 0 && $timeArr [2]  $v ) {
			$v = ereg_replace ( "^0{1,}", '', trim ( $v ) );
			if ($v == '') {
				$dt [$k] = 0;
			}
		}
		$mt = @gmmktime ( $dt [3], $dt [4], $dt [5], $dt [1], $dt [2], $dt [0] ) - 3600 * $cfg_cli_time;
		if (! empty ( $mt )) {
			return $mt;
		} else {
			return time ();
		}
	}
	
	function MyDate($format = 'Y-m-d H:i:s', $timest = 0) { //返回格林威治标准时间
		//global $cfg_cli_time='+8';
		global $cfg_cli_time;
		$addtime = $cfg_cli_time * 3600;
		if (empty ( $format )) {
			$format = 'Y-m-d H:i:s';
		}
		return gmdate ( $format, $timest + $addtime );
	}
	
	function floorTime($seconds) { //让日期显示为:XX天XX年以前 
		$times = '';
		$days = floor ( ($seconds / 86400) % 30 );
		$hours = floor ( ($seconds / 3600) % 24 );
		$minutes = floor ( ($seconds / 60) % 60 );
		$seconds = floor ( $seconds % 60 );
		if ($seconds >= 1)
			$times .= $seconds . '秒';
		if ($minutes >= 1)
			$times = $minutes . '分钟 ' . $times;
		if ($hours >= 1)
			$times = $hours . '小时 ' . $times;
		if ($days >= 1)
			$times = $days . '天';
		if ($days > 30)
			return false;
		$times .= '前';
		return str_replace ( " ", '', $times );
	}
	
	function transDateToChs($date) {
		if (empty ( $date ))
			return '今日';
		$y = _date ( 'Y', strtotime ( $date ) );
		$m = _date ( 'm', strtotime ( $date ) );
		$d = _date ( 'd', strtotime ( $date ) );
		return $y . '年' . $m . '月' . $d . '日';
	}
	
	// 08/31/2004 => 2004-08-31
	function TransDateUI($datestr, $type = 'Y-m-d') {
		if ($datestr == Null)
			return Null;
		$target = $datestr;
		$arr_date = preg_split ( "/\//", $target );
		$monthstr = $arr_date [0];
		$daystr = $arr_date [1];
		$yearstr = $arr_date [2];
		$result = date ( $type, mktime ( 0, 0, 0, $monthstr, $daystr, $yearstr ) );
		return $result;
	}
	
	// 12/20/2004 10:55 AM => 2004-12-20 10:55:00
	function TransDateTimeUI($datestr, $type = 'Y-m-d H:i:s') {
		if ($datestr == Null)
			return Null;
		$target = $datestr;
		$arr_date = preg_split ( "/\/|\s|:/", $target );
		$monthstr = $arr_date [0];
		$daystr = $arr_date [1];
		$yearstr = $arr_date [2];
		$hourstr = $arr_date [3];
		$minutesstr = $arr_date [4];
		$result = date ( $type, mktime ( $hourstr, $minutesstr, 0, $monthstr, $daystr, $yearstr ) );
		return $result;
	}
	
	// 2004-08-31 => 08/31/2004
	function TransDateDB($datestr, $type = 'm/d/Y') {
		if ($datestr == Null)
			return Null;
		if ($datestr == '0000-00-00')
			return Null;
		$target = $datestr;
		$arr_date = preg_split ( "/-/", $target );
		$monthstr = $arr_date [1];
		$daystr = $arr_date [2];
		$yearstr = $arr_date [0];
		$result = date ( $type, mktime ( 0, 0, 0, $monthstr, $daystr, $yearstr ) );
		return $result;
	}
	
	// 2004-08-31 10:55:00 => 12/20/2004 10:55 AM 
	function TransDateTimeDB($datestr, $type = 'm/d/Y h:i A') {
		if ($datestr == Null)
			return Null;
		$target = $datestr;
		$arr_date = preg_split ( "/-|\s|:/", $target );
		$monthstr = $arr_date [1];
		$daystr = $arr_date [2];
		$yearstr = $arr_date [0];
		$hourstr = $arr_date [3];
		$minutesstr = $arr_date [4];
		$secondstr = $arr_date [5];
		$result = date ( $type, mktime ( $hourstr, $minutesstr, $secondstr, $monthstr, $daystr, $yearstr ) );
		return $result;
	}
}
?>