首先，我在wpdb中创建了一个自定义表：

  global $wpdb;
  $table_name = $wpdb->prefix . \'countdown_table\';

  $sql = \'
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `styleName` varchar(255) NOT NULL,
  `css` blob NOT NULL,
  `expiration` blob NOT NULL,
  `created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
  \';

  require_once( ABSPATH . \'wp-admin/includes/upgrade.php\' );
  dbDelta( $sql );

然后，我创建了一个表单，将值发送到自定义表中：

<p>Style Name</p>   

<form action="" method="POST">

<input type="text" name="style_name">
<input type="submit" name="submit">

</form>

if (isset($_POST[\'style_name\'])) {

$style_name = $_POST[\'style_name\'];

 global $wpdb;

    $wpdb->insert( 
        \'countdown_table\', 
        array( 
            \'styleName\' => $style_name 
        ), 
        array( 

            \'%s\' 
        ) 
    );

}

下面是从表中获取结果的问题：

 global $wpdb;

    $output = \'\';

    $table_name = $wpdb->prefix . \'countdown_table\';

    $name = \'styleName\';

    $results = $wpdb->get_results( $wpdb->prepare(\'SELECT * FROM \'.$table_name ) );

    if ( $results ) {
       foreach ( $results as $result ){
       echo $result[0];
    }

问题是我无法显示保存的数据，或者我是否在创建表或插入数据的代码中出错

if ( $results ) {
    foreach ( $results as $result ){
       echo $result[0];
    }
}

if ( $results ) {

    $arrLen = count($results);

    for ($i = 0; $i < $arrLen; $i++ ){
       echo $result[$i];
    }
}