WordPress中用于获取文章信息以及分类链接的函数用法_php技巧
get_post()(获取一篇文章)
get_post() 函数可以根据 ID 查询一篇文章的信息,还能返回循环中的当前文章。
用法
get_post( $post, $output, $filter );
参数
$id
(整数 | 对象)(可选)文章 ID 或者文章对象,如果为空则自动设置成当前文章。
默认值:null(当前文章)
$output
(字符串)(可选)返回结果的形式,可选:
- OBJECT:返回一个文章对象
- ARRAY_A:返回带键值的数组
- ARRAY_N:返回不带键值的数组
- 默认值:OBJECT
$filter
(字符串)(可选)文章信息过滤方法。具体参考 sanitize_post_field() 函数。
默认值:row
返回值
(对象 | null | 数组)返回文章对象、数组或 null.
例子
获取 ID 为 7 的文章并打印输出它的标题:
$post_7 = get_post( 7 ); $title = $post_7->post_title;
获取 ID 为 7 的文章(数组形式)并打印输出它的标题:
$post_7 = get_post( 7, ARRAY_A ); $title = $post_7['post_title'];
其它
此函数位于:wp-includes/post.php 和 wp-includes/class-wp-atom-server.php
获取分类链接
在 WordPress 开发中,经常需要获取分类的链接。
知道分类 ID 的话只需要使用 get_category_link() 函数即可直接获取到。
但在实际情况中可能只知道一点分类信息,下边我介绍一下通过各种分类信息获取分类链接的方法。
根据分类 ID 获取分类链接
根据 ID 获取分类链接比较简单,直接使用 get_category_link() 函数即可。
echo get_category_link( 23 );
根据分类别名获取分类链接需要多一个步奏,先用 get_category_by_slug() 函数根据别名获取到分类,然后再获取分类链接。
echo get_category_link( get_category_by_slug( 'tips' ) );
根据分类名获取分类链接
根据分类名获取分类链接和根据分类别名获取原理类似,都是先获取到分类,再获取链接。
echo get_category_link( get_cat_ID( 'WordPress 教程' ) );

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