wpsnoop: fix AtomPub Server plugin conflicts, errors & issues

When the plugin AtomPub Server 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 AtomPub Server, plus learn which plugins and/or themes could be in conflict with AtomPub Server.


Troubleshooting theme and plugin conflicts is easier when you know what AtomPub Server 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 AtomPub Server

Get professional support for AtomPub Server here

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What does AtomPub Server version 1.0.2-dev add to WordPress? Answers Here.

This is an automatically generated report - it is possible for AtomPub Server to perform differently in your installation, previous versions before 1.0.2-dev 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 1.0.2-dev of AtomPub Server 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 AtomPub Server 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.

Which new files does AtomPub Server add to WordPress?

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

Type & Path Size Conflicts
wp-content/plugins/atompub/ 42.51kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/atompub-admin.php 2.07kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/atompub-plugin.php 2.46kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-cron.php 593.00B No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-feed.php 11.05kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-options.php 3.33kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-request.php 2.68kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-response.php 727.00B No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-server.php 7.58kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-atom-pub-service.php 1.39kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/class-url-generator.php 1.72kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/LICENSE.txt 1.31kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/Makefile 1.91kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/pubsubhubbub.php 1.42kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/readme.txt 2.31kB No known conflicts with other themes or plugins.
wp-content/plugins/atompub/utils.php 1.99kB No known conflicts with other themes or plugins.

Which new shortcodes does AtomPub Server add to WordPress?

Which new database tables are created by the WordPress plugin AtomPub Server?

Which new options are added to the wp-options table by AtomPub Server?

What new PHP functions does AtomPub Server declare when it is active?

Function   Conflicts Common Errors
plugin_admin_add_page 26 conflicts Fatal error: Cannot redeclare plugin_admin_add_page()
plugin_admin_init 29 conflicts Fatal error: Cannot redeclare plugin_admin_init()
plugin_section_text 25 conflicts Fatal error: Cannot redeclare plugin_section_text()
atompub_activate 0 conflicts Fatal error: Cannot redeclare atompub_activate()
atompub_deactivate 0 conflicts Fatal error: Cannot redeclare atompub_deactivate()
atompub_flush_rules 0 conflicts Fatal error: Cannot redeclare atompub_flush_rules()
atompub_insert_query_vars 0 conflicts Fatal error: Cannot redeclare atompub_insert_query_vars()
atompub_insert_rewrite_rules 0 conflicts Fatal error: Cannot redeclare atompub_insert_rewrite_rules()
atompub_options_page 0 conflicts Fatal error: Cannot redeclare atompub_options_page()
atompub_options_validate 0 conflicts Fatal error: Cannot redeclare atompub_options_validate()
atompub_parse_request 0 conflicts Fatal error: Cannot redeclare atompub_parse_request()
atompub_pubsubhubbub_cron 0 conflicts Fatal error: Cannot redeclare atompub_pubsubhubbub_cron()
atompub_query_vars 0 conflicts Fatal error: Cannot redeclare atompub_query_vars()
atompub_to_date 0 conflicts Fatal error: Cannot redeclare atompub_to_date()
plugin_setting_hub_url 0 conflicts Fatal error: Cannot redeclare plugin_setting_hub_url()
rest_to_line 0 conflicts Fatal error: Cannot redeclare rest_to_line()
try_update 0 conflicts Fatal error: Cannot redeclare try_update()
update_hubs 0 conflicts Fatal error: Cannot redeclare update_hubs()

Using AtomPub Server 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 AtomPub Server from the command line with WP-CLI

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

wp plugin install atompub


How to activate AtomPub Server from the command line with WP-CLI

To immediately activate AtomPub Server after WP-CLI downloads the latest version you can use the following command:

wp plugin install atompub --activate


How to reinstall AtomPub Server from the command line with WP-CLI

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

wp plugin install atompub --force


How to update AtomPub Server to the latest version from the command line with WP-CLI

wp plugin update atompub


How to delete AtomPub Server from the command line with WP-CLI

wp plugin delete atompub

Where can you download earlier versions of AtomPub Server?

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 AtomPub Server 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 AtomPub Server

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 AtomPub Server. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.