check-odd-even-foreach.php

<?
// I'd like to see whether the  task row is odd or even in CSS for printing
// as for PHP DomPDF I cant use pseudo classes (:nth-child(odd))

// get the tasks
$tasks = json_decode(get_post_meta($post->ID, 'tasks', true), true);

// set an evenm starting point, eg 0
$row_oddEven = 10;

//loop through each task
foreach ($tasks as $task) {
    // add 1 to the current odd/even number
    $row_oddEven++;

    // clear the previous odd/even result
    $row_oddEven_result = null;

    //check if the current row is odd or even
    if ($row_oddEven % 2 == 0) {
        // if its divisible by two, it must be even
        $row_oddEven_result = "even";
    } else {
        // othewrwise it must be odd
        $row_oddEven_result = "odd";
    }
    ?>

    <div class="row-is-<?= $row_oddEven_result; ?>">
        This row is <?= $row_oddEven_result; ?>!
    </div>

    <?php
} // endforeach loop