wpsnoop: fix Posts By Category plugin conflicts, errors & issues

When the plugin Posts By Category conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.

Discover which shortcodes wp-options PHP functions database tables and files are created by Posts By Category, plus learn which plugins and/or themes could be in conflict with Posts By Category.

Troubleshooting theme and plugin conflicts is easier when you know what Posts By Category leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for Posts By Category

Database Issues

ShortCode Issues

Function Issues

File System Issues

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What does Posts By Category version 2.0 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Posts By Category to perform differently in your installation, previous versions before 2.0 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 2.0 of Posts By Category behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this plugin but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for Posts By Category by clicking here.

Our testing covered the free version of this plugin there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Summary of WordPress plugin analysis: Posts By Category

Plugin Slug: list-posts-by-category Internal ID: 41417 Addon Type: Plugin Version: 2.0 Price: Free Source: WordPress.org Files: 3 (5.12kB) Short Codes: [ / ] 0 Database Tables: 0 Function Count: 4 Code Review: Search Provit

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Which new files does Posts By Category add to WordPress?

This section will populate with a table showing an icon, size and filepath.

The plugin Posts By Category added 3 new files when it was installed with WP-CLI in our WordPress test environment.

Type & Path	Size	Conflicts
wp-content/plugins/list-posts-by-category/	5.12kB	No known conflicts with other themes or plugins.
wp-content/plugins/list-posts-by-category/Postsbycategory.php	3.56kB	No known conflicts with other themes or plugins.
wp-content/plugins/list-posts-by-category/Readme.txt	1.56kB	No known conflicts with other themes or plugins.

Which new shortcodes does Posts By Category add to WordPress?

The plugin Posts By Category did not add any shortcodes when it was installed with WP-CLI in our WordPress test environment.

Which new database tables are created by the WordPress plugin Posts By Category?

Posts By Category did not create any new database tables when it was installed. It is possible that the plugin creates new database tables after an initial setup or configuration or after some period of use.

Which new options are added to the wp-options table by Posts By Category?

When Posts By Category was activated and loaded for the first time it created 1 new option in the wp_options table. Any known conflicts will be shown in red.

Option Name		Known Conflicts
pc_header		The pc_header option doesn't have any known conflicts with other themes or plugins.
<h2>Posts by category</h2>

During use Posts By Category may or may not create more options depending on how the plugin is configured and depending on which other themes and plugins are active in your specific hosting environment.

After disabling and deleting Posts By Category there were 2 options still present in the wp-options table:

pc_header
recently_activated

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What new PHP functions does Posts By Category declare when it is active?

Installing Posts By Category added 4 new functions to Wordpress at run-time. These functions are internal and generally aren't meant to be used except by developpers who wish to interface with the plugin to enhance or alter its behavior.

Function	Conflicts	Common Errors
pc_add_option_pages	2 conflicts	Fatal error: Cannot redeclare pc_add_option_pages()
pc_generate	2 conflicts	Fatal error: Cannot redeclare pc_generate()
pc_options_page	3 conflicts	Fatal error: Cannot redeclare pc_options_page()
posts_by_category	1 conflict	Fatal error: Cannot redeclare posts_by_category()

Using Posts By Category from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.

How to install Posts By Category from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp plugin install list-posts-by-category

How to activate Posts By Category from the command line with WP-CLI

To immediately activate Posts By Category after WP-CLI downloads the latest version you can use the following command:

wp plugin install list-posts-by-category --activate

How to reinstall Posts By Category from the command line with WP-CLI

To force a reinstallation of Posts By Category which overwrites the current plugin without asking for confirmation you can use the following command:

wp plugin install list-posts-by-category --force

How to update Posts By Category to the latest version from the command line with WP-CLI

wp plugin update list-posts-by-category

How to delete Posts By Category from the command line with WP-CLI

wp plugin delete list-posts-by-category

Where can you download earlier versions of Posts By Category?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of Posts By Category from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in Posts By Category

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with Posts By Category. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.