wpsnoop: fix Similarity plugin conflicts, errors & issues

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

Troubleshooting theme and plugin conflicts is easier when you know what Similarity 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 Similarity

Database Issues

ShortCode Issues

Function Issues

File System Issues

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What does Similarity version 3.0 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Similarity to perform differently in your installation, previous versions before 3.0 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 3.0 of Similarity 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 Similarity 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: Similarity

Plugin Slug: similarity Internal ID: 64488 Addon Type: Plugin Version: 3.0 Price: Free Source: WordPress.org Files: 17 (117.64kB) Short Codes: [ / ] 6 Database Tables: 0 Function Count: 15 Code Review: Search Provit

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Which new files does Similarity add to WordPress?

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

The plugin Similarity added 17 new files when it was installed with WP-CLI in our WordPress test environment.

Type & Path	Size	Conflicts
wp-content/plugins/similarity/	117.64kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/readme.txt	8.41kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/screenshot-1.png	40.46kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-de_DE.mo	2.80kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-de_DE.po	3.84kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-en_US.mo	504.00B	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-en_US.po	2.15kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-es_ES.mo	2.22kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-es_ES.po	4.86kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-fr_FR.mo	2.46kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-fr_FR.po	4.94kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-it_IT.mo	2.18kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-it_IT.po	4.82kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-pl_PL.mo	3.26kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity-pl_PL.po	3.30kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity.php	26.75kB	No known conflicts with other themes or plugins.
wp-content/plugins/similarity/similarity.pot	4.68kB	No known conflicts with other themes or plugins.

Which new shortcodes does Similarity add to WordPress?

The plugin Similarity added 6 new shortcodes when it was installed with WP-CLI in our WordPress test environment.

ShortCode		Known Plugin or Theme conflicts
[SIM-BY-CAT]		The SIM-BY-CAT shortcode doesn't have any known conflicts with other themes or plugins.
[SIM-BY-CAT-MULTI]		The SIM-BY-CAT-MULTI shortcode doesn't have any known conflicts with other themes or plugins.
[SIM-BY-MIX]		The SIM-BY-MIX shortcode doesn't have any known conflicts with other themes or plugins.
[SIM-BY-MIX-MULTI]		The SIM-BY-MIX-MULTI shortcode doesn't have any known conflicts with other themes or plugins.
[SIM-BY-TAG]		The SIM-BY-TAG shortcode doesn't have any known conflicts with other themes or plugins.
[SIM-BY-TAG-MULTI]		The SIM-BY-TAG-MULTI shortcode doesn't have any known conflicts with other themes or plugins.

Note: We have not yet checked to see if these shortcodes work as expected in pages, posts, sidebar widgets, or when set as the page title, in content, in the excert, in menus or anywhere else within a WordPress installation. A shortcode could produce errors due to parameters added when it is used, or if the plugin is updated and the format of the shortcode has changed.

Which new database tables are created by the WordPress plugin Similarity?

Similarity 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 Similarity?

When Similarity 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
similarity		The similarity option doesn't have any known conflicts with other themes or plugins.
a:17:{s:5:"limit";i:5;s:9:"none_text";s:29:"<ul><li>Unique Post</li></ul>";s:6:"prefix";s:4:"<ul>";s:6:"suffix";s:5:"</ul>";s:6:"format";s:5:"value";s:15:"output_template";s:28:"<li>{link} ({strength})</li>";s:11:"auto_prefix";s:4:"<ul>";s:11:"auto_suffix";s:5:"</ul>";s:11:"auto_format";s:5:"value";s:20:"auto_output_template";s:28:"<li>{link} ({strength})</li>";s:10:"tag_weight";i:1;s:10:"cat_weight";i:1;s:11:"text_strong";s:23:"<strong>Strong</strong>";s:9:"text_mild";s:4:"Mild";s:9:"text_weak";s:4:"Weak";s:12:"text_tenuous";s:16:"<em>Tenuous</em>";s:9:"one_extra";s:5:"false";}

During use Similarity 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 Similarity there were 2 options still present in the wp-options table:

recently_activated
similarity

Contact Similarity experts for help

What new PHP functions does Similarity declare when it is active?

Installing Similarity added 15 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
get_list	2 conflicts	Fatal error: Cannot redeclare get_list()
options_page	10 conflicts	Fatal error: Cannot redeclare options_page()
auto_display	0 conflicts	Fatal error: Cannot redeclare auto_display()
mix_lists	0 conflicts	Fatal error: Cannot redeclare mix_lists()
print_similarity	0 conflicts	Fatal error: Cannot redeclare print_similarity()
short_cat	0 conflicts	Fatal error: Cannot redeclare short_cat()
short_mix	0 conflicts	Fatal error: Cannot redeclare short_mix()
short_tag	0 conflicts	Fatal error: Cannot redeclare short_tag()
sim_by_cat	0 conflicts	Fatal error: Cannot redeclare sim_by_cat()
sim_by_cat_multi	0 conflicts	Fatal error: Cannot redeclare sim_by_cat_multi()
sim_by_mix	0 conflicts	Fatal error: Cannot redeclare sim_by_mix()
sim_by_mix_multi	0 conflicts	Fatal error: Cannot redeclare sim_by_mix_multi()
sim_by_tag	0 conflicts	Fatal error: Cannot redeclare sim_by_tag()
sim_by_tag_multi	0 conflicts	Fatal error: Cannot redeclare sim_by_tag_multi()
similarity_option_menu	0 conflicts	Fatal error: Cannot redeclare similarity_option_menu()

Using Similarity 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 Similarity from the command line with WP-CLI

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

wp plugin install similarity

How to activate Similarity from the command line with WP-CLI

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

wp plugin install similarity --activate

How to reinstall Similarity from the command line with WP-CLI

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

wp plugin install similarity --force

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

wp plugin update similarity

How to delete Similarity from the command line with WP-CLI

wp plugin delete similarity

Where can you download earlier versions of Similarity?

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 Similarity 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 Similarity

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