怎么用php获取本月第几周（实例讲解）

$week = date('W');
echo $week;

$first_day_of_month = date('Y-m-01');
$first_day_of_month_week = date('W', strtotime($first_day_of_month));
$current_week = date('W') - $first_day_of_month_week + 1;
echo $current_week;

use Carbon\Carbon;
$now = Carbon::now();
$current_week = $now->weekOfMonth;
echo $current_week;

$week_start_dates = array();
$week_end_dates = array();
$first_day_of_month = date('Y-m-01');
$first_day_of_month_week = date('W', strtotime($first_day_of_month));
$current_week = date('W') - $first_day_of_month_week + 1;
for ($i = 1; $i <= $current_week; $i++) {
    $date = date('Y-m-d', strtotime($first_day_of_month . ' +' . (7 * ($i - 1)) . ' days'));
    $week_start_dates[] = date('Y-m-d', strtotime('last monday', strtotime($date)));
    $week_end_dates[] = date('Y-m-d', strtotime('next sunday', strtotime($date)));
}
print_r($week_start_dates);
print_r($week_end_dates);

use Carbon\Carbon;
$now = Carbon::now();
$current_week = $now->weekOfMonth;
$week_days = array();
$week_days[1] = 0;
for ($i = 2; $i <= $current_week; $i++) {
    $week = Carbon::createFromDate($now->year, $now->month, 1)->startOfMonth()->addWeeks($i-1);
    $week_days[$i] = $week->diffInDaysFiltered(function(Carbon $date) {
        return $date->isWeekday();
    });
}
print_r($week_days);