年の各週の開始日と終了日を取得する PHP メソッド_PHP チュートリアル

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関数 get_week($year) {

$ye​​ar_start = $year . "-01-01";

$ye​​ar_end = $year . "-12-31";

$startday = strtotime($year_start);

if (intval(date('N', $startday)) != '1') {

$startday=strtotime("nextmonday",strtotime($year_start));

//年の最初の週の日付を取得します

}

$ye​​ar_mondy = date("Y-m-d", $startday);//年の最初の週の日付を取得します

$endday = strtotime($year_end);

if (intval(date('W', $endday)) == '7') {

$endday=strtotime("最後の日曜日",strtotime($year_end));

}

$num = intval(date('W', $endday));

for ($i = 1; $i

$j = $i -1;

$start_date = date("Y-m-d", strtotime("$year_mondy $j year "));

$end_day = date("Y-m-d", strtotime("$start_date +6 day"));

$week_array[$i] = array(

str_replace("-",".",$start_date),str_replace("-",".",$end_day));

}

$week_array を返す;

}