给定任意时间算出该周的起止时间

给定时间戳，算出本周起止时间 无 function getWeekDate($timestamp) {//年份 如2015年$year = date('Y', $timestamp);//本年份第几周 $weeknum = date('W', $timestamp);//年份中的第几天 0 到 365$day = date('z', $timestamp);//周几 1（表示星期一）到 7

给定时间戳，算出本周起止时间

function getWeekDate($timestamp) {
	//年份 如2015年
	$year = date('Y', $timestamp);
	//本年份第几周 
	$weeknum = date('W', $timestamp);
	//年份中的第几天 0 到 365
	$day = date('z', $timestamp);
	//周几 1（表示星期一）到 7（表示星期天） 
	$weekday = date('N', $timestamp);
	//本年的第一天是周几
	$firstDayOfWeek = date('w', mktime(0,0,0,1,1,$year));
	//echo $year.'--'.$weeknum.'--'.$day.'--'.$weekday;
	//本年的第一周
	if ($weeknum == 1) {
		$startdate = date('Y-m-d',mktime(0,0,0,1,1,$year));
		$enddate = date('Y-m-d',mktime(0,0,0,1,7-$firstDayOfWeek+1,$year));
		//最后几天并入下一年第一周的情况，如2014/12/29算2015年第一周 
		//非下一年第一周 (>7表示前一年的最后几天)
		if ($day > 7) {
			//每周的开始时间 $day+1-$weekday+1
			$startdate = date('Y-m-d',mktime(0,0,0,1,$day+1-$weekday+1,$year));
			$enddate = date('Y-m-d',mktime(0,0,0,12,31,$year));
		}
	} elseif ($weeknum == 53) { //本年最后一周
		$startdate = date('Y-m-d',mktime(0,0,0,1,$day+1-$weekday+1,$year));
		$enddate = date('Y-m-d',mktime(0,0,0,12,31,$year));
	}else {//其他情况
		$startdate = date('Y-m-d',mktime(0,0,0,1,$day+1-$weekday+1,$year));
		$enddate = date('Y-m-d',mktime(0,0,0,1,$day+7-$weekday+1,$year));
	}
	return array($startdate,$enddate);     
}