我正在尝试使用WP_Query 如下所示：

$searchTerm = \'%my book%\';
$args = array(
    \'post_type\'    => \'books\',
    \'meta_query\' = array(
        \'relation\' => \'OR\',
        array(
            \'key\' => \'book_title\',
            \'value\' => $searchTerm,
            \'compare\' => \'LIKE\'
        ),
        array(
            \'key\' => \'book_description\',
            \'value\' => $searchTerm,
            \'compare\' => \'LIKE\'
        )
    );
);

$query = new WP_Query($args);

上面的查询工作正常。事实上我可以改变compare 任何mysql支持的运算符的运算符，如：

=,
\\>=,
<=,
\\>,
<,
LIKE,
RLIKE,
BETWEEN

但是，我不知道如何使用运算符MATCH AGAINST. 在MySQL中，它的工作原理如下：

select *
from wp_postmeta
where meta_key = \'book_title\'
and match(meta_value) against (\'my book\');

但我想不出一个方法WP_Query, 提前谢谢。

=
!=
>
>=
<
<= 
LIKE
NOT LIKE
IN
NOT IN
BETWEEN
NOT BETWEEN
NOT EXISTS
REGEXP
NOT REGEXP
RLIKE

$wpdb->prepare(" AND MATCH($wpdb->posts.post_title, $wpdb->posts.post_content) AGAINST(%s)", $search );

$query = new WP_Query( array( \'tag__not_in\' => array( 1, 2, 3 ) ) );