xamxam/templates/partials/form/checkbox-list.php

<?php
/**
 * Checkbox list partial — renders a group of checkboxes (e.g. languages, formats).
 *
 * The group label uses a visible <span> as the first column (matching other form
 * rows), while a <fieldset>/<legend> in the second column provides the accessible
 * grouping required by WCAG 1.3.1. The <legend> is visually hidden (sr-only) to
 * avoid duplicating the visible label text.
 *
 * Variables consumed:
 *   string  $name      — input name attribute (will be posted as array: name[])
 *   string  $label     — group label text
 *   array   $options   — each element must have 'id' and 'name' keys
 *   array   $checked   — array of 'id' values that are currently checked
 */

$checked = $checked ?? [];
?>
<div>
    <span class="admin-row-label"><?= htmlspecialchars($label) ?></span>
    <fieldset class="admin-checkbox-group">
        <legend class="sr-only"><?= htmlspecialchars($label) ?></legend>
        <ul>
            <?php foreach ($options as $opt): ?>
            <li>
                <label class="admin-checkbox-label">
                    <input type="checkbox"
                           name="<?= htmlspecialchars($name) ?>[]" 
                           value="<?= htmlspecialchars((string)$opt['id']) ?>"
                           <?= in_array((string)$opt['id'], array_map('strval', $checked)) ? 'checked' : '' ?>>
                    <?= htmlspecialchars($opt['name']) ?>
                </label>
            </li>
            <?php endforeach; ?>
        </ul>
    </fieldset>
</div>
<?php
unset($checked);