您必须扩展db查询才能在post_content 柱有一个过滤器：\'posts_where\' 您可以使用。

我会为get_posts() 要扩展其参数，请运行一次筛选器。示例：

class T5_Posts_By_Content
{
    protected static $content = \'\';

    protected static $like    = TRUE;

    /**
     * Mapper for get_posts() with extra arguments \'content\' and \'like\'
     *
     * \'content\' must be a string with optional \'%\' for free values.
     * \'like\' must be TRUE or FALSE.
     *
     * @param array $args See get_posts.
     * @return array
     */
    public static function get( $args )
    {
        if ( isset ( $args[\'content\'] ) )
        {
            // This is TRUE by default for get_posts().
            // We need FALSE to let the WHERE filter do its work.
            $args[\'suppress_filters\'] = FALSE;
            self::$content            = $args[\'content\'];
            add_filter( \'posts_where\', array ( __CLASS__, \'where_filter\' ) );
        }

        isset ( $args[\'like\'] ) and self::$like = (bool) $like;

        return get_posts( $args );
    }

    /**
     * Changes the WHERE clause.
     *
     * @param string $where
     * @return string
     */
    public static function where_filter( $where )
    {
        // Make sure we run this just once.
        remove_filter( \'posts_where\', array ( __CLASS__, \'where_filter\' ) );

        global $wpdb;
        $like  = self::$like ? \'LIKE\' : \'NOT LIKE\';
        // Escape the searched text.
        $extra = $wpdb->prepare( \'%s\', self::$content );

        // Reset vars for the next use.
        self::$content = \'\';
        self::$like    = TRUE;

        return "$where AND post_content $like $extra";
    }
}

$args = array(
    \'content\' => \'%resized%\'
);
$posts = T5_Posts_By_Content::get( $args );

$args = array(
    \'content\' => \'%resized%\',
    \'like\'    => FALSE
);
$posts = T5_Posts_By_Content::get( $args );