php 出勤一覧等の曜日を表示する

出勤情報等、曜日を表示させたい場合を記載します。
今回は日付変更線をズラして朝5時としてみます。
※朝5時までは前日の日付を表示

土曜日（Sat）の場合青、日曜日（Sun）の場合赤としています。

Contents

1 完成イメージ
2 php コード
3 表示側

完成イメージ

php コード

//配列を使用し、要素順に(日:0〜土:6)を設定する
$week = [
  'Sun', //0
  'Mon', //1
  'Tue', //2
  'Wed', //3
  'Thu', //4
  'Fri', //5
  'Sat', //6
];
//時間算出
$time = date('H');

//日付変更線05なら朝５時
if ($time <= 05 ) {
	$date = date("d", strtotime("-1 day"));
	$dateeye = date("Ymd", strtotime("-1 day"));
} else {
	$date = date('d');
	$dateeye = date("Ymd");
}

$date_list1 = date('d', strtotime($dateeye));
$date_list2 = date('d', strtotime("$dateeye +1 day"));
$date_list3 = date('d', strtotime("$dateeye +2 day"));
$date_list4 = date('d', strtotime("$dateeye +3 day"));
$date_list5 = date('d', strtotime("$dateeye +4 day"));
$date_list6 = date('d', strtotime("$dateeye +5 day"));
$date_list7 = date('d', strtotime("$dateeye +6 day"));

$date_week1 = date('w', strtotime($dateeye));
$date_week2 = date('w', strtotime("$dateeye +1 day"));
$date_week3 = date('w', strtotime("$dateeye +2 day"));
$date_week4 = date('w', strtotime("$dateeye +3 day"));
$date_week5 = date('w', strtotime("$dateeye +4 day"));
$date_week6 = date('w', strtotime("$dateeye +5 day"));
$date_week7 = date('w', strtotime("$dateeye +6 day"));

表示側

<h5 style="background-color: #2d2d2d;">出勤情報一覧</h5>

		<div class="spcalendar">
			<ul class="tab-group">
				<li class="tab is-active"><p class="today <?php
						if ($week[$date_week1] == 'Sat') {
							print 'blue';
						} elseif ($week[$date_week1] == 'Sun') {
							print 'red';
						}

					?>"><?php echo $date_list1; ?><span><?php echo $week[$date_week1]; ?></span></p></li>
				<li class="tab"><p
					<?php
						if ($week[$date_week2] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week2] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list2; ?><span><?php echo $week[$date_week2]; ?></span></p></li>
				<li class="tab"><p
					<?php
						if ($week[$date_week3] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week3] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list3; ?><span><?php echo $week[$date_week3]; ?></span></p></li>
				<li class="tab"><p<?php
						if ($week[$date_week4] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week4] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list4; ?><span><?php echo $week[$date_week4]; ?></span></p></li>
				<li class="tab"><p<?php
						if ($week[$date_week5] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week5] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list5; ?><span><?php echo $week[$date_week5]; ?></span></p></li>
				<li class="tab"><p<?php
						if ($week[$date_week6] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week6] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list6; ?><span><?php echo $week[$date_week6]; ?></span></p></li>
				<li class="tab"><p<?php
						if ($week[$date_week7] == 'Sat') {
							print ' class="blue"';
						} elseif ($week[$date_week7] == 'Sun') {
							print ' class="red"';
						}

					?>><?php echo $date_list7; ?><span><?php echo $week[$date_week7]; ?></span></p></label></li>
			</ul>
		</div>

.blue {
  color: blue;
}
.red {
  color: red;
}