问如何将2个迟到分数计算为缺勤半天

EN

/**
 * @param array $latemark_halfday
 *    An array of late marks.
 * @return array
 *    The first item is the calculated fullday absent.
 *    The second item is the calculated halfday absent.
 */
function calculate_absent($latemark_halfday) {
        $fullday_absent = (int) floor(count($latemark_halfday) / 3);
        $halfday_absent = (int) floor((count($latemark_halfday) % 3) / 2);
        return [$fullday_absent, $halfday_absent];
}

<?php

$tests = [
        ['input' => [1], 'expected' => [0, 0]],
        ['input' => [1, 1], 'expected' => [0, 1]],
        ['input' => [1, 1, 1], 'expected' => [1, 0]],
        ['input' => [1, 1, 1, 1], 'expected' => [1, 0]],
        ['input' => [1, 1, 1, 1, 1], 'expected' => [1, 1]],
        ['input' => [1, 1, 1, 1, 1, 1], 'expected' => [2, 0]],
        ['input' => [1, 1, 1, 1, 1, 1, 1], 'expected' => [2, 0]],
        ['input' => [1, 1, 1, 1, 1, 1, 1, 1], 'expected' => [2, 1]],
];

foreach ($tests as $test) {
        $latemark_halfday = $test['input'];
        $count = count($latemark_halfday);
        list($expected_fullday, $expected_halfday) = $test['expected'];
        list($fullday_absent, $halfday_absent) = calculate_absent($latemark_halfday);

        // tests
        if ($expected_fullday !== $fullday_absent) throw new Exception("count: $count: fullday: expected $expected_fullday, got $fullday_absent"));
        if ($expected_halfday !== $halfday_absent) throw new Exception("count: $count: halfday: expected $expected_halfday, got $halfday_absent"));
        echo "latemarks: $count, fullday: $fullday_absent, halfday: $halfday_absent  [pass]\n";
}

latemarks: 1, fullday: 0, halfday: 0  [pass]
latemarks: 2, fullday: 0, halfday: 1  [pass]
latemarks: 3, fullday: 1, halfday: 0  [pass]
latemarks: 4, fullday: 1, halfday: 0  [pass]
latemarks: 5, fullday: 1, halfday: 1  [pass]
latemarks: 6, fullday: 2, halfday: 0  [pass]
latemarks: 7, fullday: 2, halfday: 0  [pass]
latemarks: 8, fullday: 2, halfday: 1  [pass]