判断、添加和删除WordPress置顶文章的相关PHP函数小结_PHP
判断置顶文章
is_sticky() 函数用来判断一篇文章是否为置顶文章。
用法
is_sticky( $post_id );
参数
$post_id
(整数)(可选)要判断的文章 ID,默认是循环中的当前文章。
默认值:0(循环中的当前文章)
返回值
(布尔)文章是否为置顶文章。
例子
if( is_sticky() ) echo //'当前文章是置顶文章'; if( is_sticky( 68 ) ) echo //'ID 为 68 的文章是置顶文章';
其它
此函数位于:wp-includes/post.php
添加和移除置顶文章的函数
WordPress 默认支持文章置顶的功能,你可以把重要或精彩的文章在后台置顶,让用户优先看到。
在开发中,可能需要通过代码来添加和移除置顶文章。WordPress 置顶文章的原理就是把置顶文章的 ID 存到 options 表里,通过修改 sticky_posts 字段即可控制置顶文章。
但是,WordPress 提供了两个函数,可以更加轻松的添加和移除置顶文章,直接调用函数即可修改 sticky_posts 字段。
stick_post()
stick_post() 函数用来把一篇文章置顶,例子:
stick_post( 68 );//置顶 ID 为 68 的文章 stick_post( get_the_ID() );//置顶循环中的当前文章
unstick_post()
unstick_post() 和 stick_post() 函数相反,用来把一篇置顶文章取消置顶:
unstick_post( 425 );//取消置顶 ID 为 425 的文章 unstick_post( get_the_ID() );//取消置顶循环中的当前文章

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