获取当前时间上一周的开始时间和结束时间

/**
* 获取当前时间上一周的开始时间和结束时间，可以通过配置一周的开始时间，默认为星期一
* @param
* $begin 上一周开始时间的变量名称；
* $end 上一周结束时间的变量名称；
* $week_start_num 一周的开始时间，默认为周一
* $now_time 当前时间，这里做一个当前时间方便测试该方法的正确性
* @return array()
* @author leeyi

/**
* 获取当前时间上一周的开始时间和结束时间，可以通过配置一周的开始时间，默认为星期一
* @param
* $begin 上一周开始时间的变量名称；
* $end 上一周结束时间的变量名称；
* $week_start_num 一周的开始时间，默认为周一
* $now_time 当前时间，这里做一个当前时间方便测试该方法的正确性
* @return array()
* @author leeyi
* @spec
* 使用方法，执行
* extract(get_lastweek('beginLastweek','endLastweek'));
* 之后，可以直接使用 $beginLastweek $endLastweek 两个变量；
* 如果需要其他变量名称，可以修改参数 $begin 和 $end ，自行指定名称
* @end
*/
function get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, $now_time='') {
$now_time = $now_time>0 ? $now_time : time();
$now_weekday = date('w', $now_time); // 获取当前是星期前 0-6 星期日-星期六
$week_start_num = in_array($week_start_num, array('0','1','2','3','4','5','6')) ? $week_start_num : 1; // 默认一周开始时间为周一
$now_weekday = $now_weekday<$week_start_num ? $now_weekday+7 : $now_weekday;
//php获取上周起始时间戳和结束时间戳
$beginLastweek = $now_time-($now_weekday+7-$week_start_num)*86400;
$endLastweek = $beginLastweek+(6*86400);
echo date('Y-m-d',$now_time).' : '.date('Y-m-d 00:00:00', $beginLastweek).' => '.date('Y-m-d 23:59:59', $endLastweek).'
'; // for test
return array(
$begin => strtotime(date('Y-m-d 00:00:00', $beginLastweek)),
$end => strtotime(date('Y-m-d 23:59:59', $endLastweek))
);
}下面是测试代码 ：get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-22'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-23'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-24'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-25'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-26'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-27'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-28'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=0, strtotime('2015-03-29'));
echo '

---

';
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-22'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-23'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-24'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-25'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-26'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-27'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-28'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=1, strtotime('2015-03-29'));
echo '

---

';
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-22'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-23'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-24'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-25'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-26'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-27'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-28'));
get_lastweek($begin='beginLastweek',$end='endLastweek',$week_start_num=2, strtotime('2015-03-29'));
exit();浏览器输出结果：

2015-03-22 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-23 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-24 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-25 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-26 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-27 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-28 : 2015-03-15 00:00:00 => 2015-03-21 23:59:59
2015-03-29 : 2015-03-22 00:00:00 => 2015-03-28 23:59:59

2015-03-22 : 2015-03-09 00:00:00 => 2015-03-15 23:59:59
2015-03-23 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-24 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-25 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-26 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-27 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-28 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59
2015-03-29 : 2015-03-16 00:00:00 => 2015-03-22 23:59:59

2015-03-22 : 2015-03-10 00:00:00 => 2015-03-16 23:59:59
2015-03-23 : 2015-03-10 00:00:00 => 2015-03-16 23:59:59
2015-03-24 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59
2015-03-25 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59
2015-03-26 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59
2015-03-27 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59
2015-03-28 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59
2015-03-29 : 2015-03-17 00:00:00 => 2015-03-23 23:59:59

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