Commit c2fbc732 authored by Адлан Шамавов's avatar Адлан Шамавов
Browse files

add diffDays

parent 2bbcd697

index.php

+9 −15
Original line number Diff line number Diff line 
<?php

/** 

 * Вернет все пятницы 13 в году 

 * @param int $yaer год, в котором необходимо произвести расчет 

 * @return DateTimeImmutable[]  

 * Вернет кол-во дней между датами 

 * @param DateTimeImmutable $dateStart дата начала

 * @param DateTimeImmutable $dateEnd дата окончания

 * @return int

 */

function countFriday13(int $year): iterable {

    $stardDate = new DateTime("{$year}-01-01 Friday");

    $year += 1;

    $endDate = new DateTime("{$year}-01-01");

    $interval = new DateInterval('P7D');

    foreach(new DatePeriod($stardDate, $interval, $endDate) as $day) {

        yield new DateTimeImmutable($day->format("Y-m-d"));

    }

function diffDays(DateTimeImmutable $dateStart, DateTimeImmutable $dateEnd): int {

    $dateInterval = date_diff($dateStart, $dateEnd);

    return $dateInterval->format("%a") ;

}



?>
@@ -25,9 +21,7 @@ function countFriday13(int $year): iterable { 
</head>

<body>

    <?php

        foreach(countFriday13(2024) as $date) {

            print($date->format("Y-m-d l") . "\n");

        }

        print(diffDays(new DateTimeImmutable(), new DateTimeImmutable("2025-01-01")));

    ?>

</body>

</html>
 
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