게시판 분류를 셀렉트 박스로 추출 방법

</p>

<p><?php if ($is_category) { ?>

    <form action="<?php echo $bo_table ?>" method="get">

        <label for="bo_cate_select"><?php echo $board['bo_subject'] ?> 카테고리</label>

        <select name="sca" id="bo_cate_select">

            <?php $selected_all = (!isset($_GET['sca']) || $_GET['sca'] === '') ? 'selected' : '';?>

            <option value="" <?php echo $selected_all ?>>전체</option></p>

<p>            <?php foreach ($categories as $category) { ?>

                <?php $selected = (isset($_GET['sca']) && $_GET['sca'] == $category) ? 'selected' : '';?>

                <option value="<?php echo htmlspecialchars($category); ?>" <?php echo $selected ?>><?php echo htmlspecialchars($category); ?></option>

            <?php } ?>

        </select>

        <input type="submit" value="선택">

    </form></p>

<p><?php } ?></p>

<p>