php 周时间

// 获取当前日期
$current_date = date('Y-m-d');

// 获取当前周的开始日期（星期一）
$start_of_week = date('Y-m-d', strtotime("{$current_date} -".date('w', strtotime($current_date))." days"));

// 获取当前周的结束日期（星期日）
$end_of_week = date('Y-m-d', strtotime("{$start_of_week} +6 days"));

echo "Start of Week: {$start_of_week}\n";
echo "End of Week: {$end_of_week}\n";

$date = '2023-10-05';
$day_of_week = date('l', strtotime($date));
echo "The day of the week for {$date} is {$day_of_week}";

$date = '2023-10-05';
$week_number = date('W', strtotime($date));
echo "The week number for {$date} is {$week_number}";