【wordpress】 $wpdb 应用实例

<?php
require_once('e:/php/wordpress/wp-blog-header.php');//注释掉这一句就出错了
global $wpdb;

$a = $wpdb->get_results("SELECT id, keyword FROM wp_keyword where id<10");
//echo count($a);
foreach ($a as $b) {
echo $b->keyword."<br />";
}
?>