php计算给定日期所在周的开始日期和结束日期示例

<?php/** * 取得给定日期所在周的开始日期和结束日期 * @param string $gdate 日期，默认为当天，格式：YYYY-MM-DD * @param int $weekStart 一周以星期一还是星期天开始，0为星期天，1为星期一 * @return array 数组array( "开始日期 ",  "结束日期"); */function getAWeekTimeSlot($gdate = '', $weekStart = 0) { if (! $gdate){ $gdate = date ( "Y-m-d" ); } $w = date ( "w", strtotime ( $gdate ) ); //取得一周的第几天,星期天开始0-6 $dn = $w ? $w - $weekStart : 6; //要减去的天数 $st = date ( "Y-m-d", strtotime ( "$gdate  - " . $dn . "  days " ) ); $en = date ( "Y-m-d", strtotime ( "$st  +6  days " ) ); return array ($st, $en ); //返回开始和结束日期}$timeSlot=getAWeekTimeSlot('2017-01-24',1);echo "Week Start:{$timeSlot[0]}--->Week End: {$timeSlot[1]} ";?>

Week Start:2017-01-23--->Week End: 2017-01-29