WordPress文章归档只显示最近12个月

修改wp-includes/widgets文件夹下的class-wp-widget-archives.php，搜索widget_archives_args，增加一个参数limit，修改为：

<?php wp_get_archives(apply_filters('widget_archives_args', array('type' => 'monthly', 'show_post_count' => $c,'limit' => 12))); ?>