How to obtain the author and classification information of articles in WordPress

This article mainly introduces how to obtain the author and classification information in WordPress, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

Author

To query articles related to some authors (users), you can use four parameters:

Author (integer): user ID

Author_name (string): nickname of the user ("user_nicename" field)

Author__in (array): user ID

Author__not_in (array): user ID

Get an author's article

Obtain according to the user ID:

$query = new WP_Query ('author=123')

Based on the user's nickname ("user_nicename" field):

$query = new WP_Query ('author_name=rami')

Get articles from multiple authors

Get the articles of multiple authors based on the user ID:

$query = new WP_Query ('author=2,6,17,38')

Exclude the author's article

Rule out the way an author can use the user ID preceded by a "-":

$query = new WP_Query ('author=-12')

Multi-author query

Get articles from multiple authors:

$query = new WP_Query (array ('author__in' = > array (2,6))

Exclude articles from multiple authors:

$query = new WP_Query (array ('author__not_in' = > array (2,6))

classification

There are five parameters available for classification:

Cat (integer): classification ID

Category_name (string): classification alias

Category__and (array): classification ID

Category__in (array): classification ID

Category__not_in (array): classification ID

Get a classified article

Get a classified article based on the classified ID (including the subcategories of this category):

$query = new WP_Query ('cat=4')

Get a classified article based on the alias of the category (including the subcategories of this category):

$query = new WP_Query ('category_name=staff')

Get a classified article based on the classified ID (excluding the subcategories of this category):

$query = new WP_Query ('category__in=4')

Get multiple classified articles

Get multiple classified articles based on the classified ID:

$query = new WP_Query ('cat=2,6,17,38')

Get multiple classified articles based on classification aliases:

$query = new WP_Query ('category_name=staff,news')

Get articles that have several categories at the same time according to the category alias:

$query = new WP_Query ('category_name=staff+news')

Exclusion classification

To exclude some categories, you just need to precede the category ID with a "-" sign:

$query = new WP_Query ('cat=-12,-34,-56')

Multi-classification query

To get articles with multiple categories at the same time, the following code gets articles that must have categories with ID 2 and 6 at the same time:

$query = new WP_Query (array ('category__and' = > array (2,6))

Get articles with multiple categories, excluding their subcategories. The following code gets articles with an ID of 2 or an ID of 6:

$query = new WP_Query (array ('category__in' = > array (2,6))

Exclude some classified articles:

$query = new WP_Query (array ('category__not_in' = > array (2,6)); Thank you for reading this article carefully. I hope the article "how to get the author and classified information in WordPress" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!