这cannot 工作它必须如下所示（或类似）：

<?php
if (get_post_meta($post->ID, \'TourURL\', true)) {
    ?>
    <div class="tourenquiryonline">
        <h2>Book or Inquire</h2>
        This tour can be booked online.
    </div>
    <?php
} elseif (get_post_meta($post->ID, \'bhid\', true)) {
    ?>
    <div class="tourenquiryonline">
        <h2>Book</h2>
        This tour can be booked online via the form on the right hand side of this page.
    </div>
    <?php
} else {
    ?>
    <div class="tourenquiry">
        <div id="wufoo-q7x2x3">
        Fill out my <a href="http://touristisrael.wufoo.com/forms/q7x2x3">online form</a>.
        </div>
    <?php
}
?>

php中的switch case是什么？

switch ($i) {
case 0:
    echo "i equals 0";
    break;
case 1:
    echo "i equals 1";
    break;
case 2:
    echo "i equals 2";
    break;