wpsnoop: fix JR Referrer plugin conflicts, errors & issues

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

Troubleshooting theme and plugin conflicts is easier when you know what JR Referrer 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 JR Referrer

Database Issues

ShortCode Issues

Function Issues

184

File System Issues

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What does JR Referrer version 1.3.1 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for JR Referrer to perform differently in your installation, previous versions before 1.3.1 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 1.3.1 of JR Referrer 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 JR Referrer 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: JR Referrer

Plugin Slug: jr-referrer Internal ID: 38488 Addon Type: Plugin Version: 1.3.1 Price: Free Source: WordPress.org Files: 3 (16.97kB) Short Codes: [ / ] 0 Database Tables: 1 Function Count: 13 Code Review: Search Provit

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Which new files does JR Referrer add to WordPress?

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

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

Type & Path	Size	Conflicts
wp-content/plugins/jr-referrer/	16.97kB	No known conflicts with other themes or plugins.
wp-content/plugins/jr-referrer/jr-referrer.php	15.80kB	No known conflicts with other themes or plugins.
wp-content/plugins/jr-referrer/readme.txt	1.17kB	No known conflicts with other themes or plugins.

Which new shortcodes does JR Referrer add to WordPress?

The plugin JR Referrer 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 JR Referrer?

JR Referrer created 1 new database table when it was installed in our test environment:

Table name	Known Plugin or Theme conflicts
wp_jrreferrer	Potential conflict with 3 other plugins

After uninstalling and deleting JR Referrer using WP-CLI there were 1 database table that still remained:

Table name	Status
wp_jrreferrer	Orphan/Zombie

Click the table name above for more information on what the orphan table could mean to your WordPress installation and some tips on how to deal with it.

Which new options are added to the wp-options table by JR Referrer?

When JR Referrer was activated and loaded for the first time it created 3 new options in the wp_options table. Any known conflicts will be shown in red.

Option Name		Known Conflicts
referrer_db_version		Potential conflict with 3 plugins or themes
(empty string)
jr_referrer_link_personal		The jr_referrer_link_personal option doesn't have any known conflicts with other themes or plugins.
(empty string)
jr_submitted_referrer		The jr_submitted_referrer option doesn't have any known conflicts with other themes or plugins.
1

During use JR Referrer 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 JR Referrer there were 4 options still present in the wp-options table:

jr_referrer_link_personal
jr_submitted_referrer
recently_activated
referrer_db_version

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What new PHP functions does JR Referrer declare when it is active?

Installing JR Referrer added 13 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
_iscurlinstalled	40 conflicts	Fatal error: Cannot redeclare _iscurlinstalled()
curl_get_contents	48 conflicts	Fatal error: Cannot redeclare curl_get_contents()
init_referrer_widget	3 conflicts	Fatal error: Cannot redeclare init_referrer_widget()
jr_show_notices	39 conflicts	Fatal error: Cannot redeclare jr_show_notices()
parse_url_referrer	3 conflicts	Fatal error: Cannot redeclare parse_url_referrer()
referrer_install	3 conflicts	Fatal error: Cannot redeclare referrer_install()
referrer_set_referrer	3 conflicts	Fatal error: Cannot redeclare referrer_set_referrer()
setupch	42 conflicts	Fatal error: Cannot redeclare setupch()
show_referrer	3 conflicts	Fatal error: Cannot redeclare show_referrer()
jr_referrer_add_pages	0 conflicts	Fatal error: Cannot redeclare jr_referrer_add_pages()
jr_referrer_options_page	0 conflicts	Fatal error: Cannot redeclare jr_referrer_options_page()
jr_referrer_refresh	0 conflicts	Fatal error: Cannot redeclare jr_referrer_refresh()
referrer_choice	0 conflicts	Fatal error: Cannot redeclare referrer_choice()

Using JR Referrer 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 JR Referrer from the command line with WP-CLI

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

wp plugin install jr-referrer

How to activate JR Referrer from the command line with WP-CLI

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

wp plugin install jr-referrer --activate

How to reinstall JR Referrer from the command line with WP-CLI

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

wp plugin install jr-referrer --force

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

wp plugin update jr-referrer

How to delete JR Referrer from the command line with WP-CLI

wp plugin delete jr-referrer

Where can you download earlier versions of JR Referrer?

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 JR Referrer 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 JR Referrer

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