wpsnoop: fix Flattr plugin conflicts, errors & issues

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

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

Database Issues

ShortCode Issues

Function Issues

File System Issues

Get professional support for Flattr here

When you need professional help with WordPress: get help here

What does Flattr version 1.2.1 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Flattr to perform differently in your installation, previous versions before 1.2.1 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 1.2.1 of Flattr 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 Flattr 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: Flattr

Plugin Slug: flattr Internal ID: 27832 Addon Type: Plugin Version: 1.2.1 Price: Free Source: WordPress.org Files: 65 (730.44kB) Short Codes: [ / ] 1 Database Tables: 0 Function Count: 11 Code Review: Search Provit

Do you need help with Flattr? Get professional plugin support here in no time at all

Which new files does Flattr add to WordPress?

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

The plugin Flattr added 65 new files when it was installed with WP-CLI in our WordPress test environment.

Type & Path	Size	Conflicts
wp-content/plugins/flattr/	730.44kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/flattr_client.php	181.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/flattr_client.txt	1.16kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/flattr.css	915.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/flattr.php	41.39kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/	26.22kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_diagonals-thick_18_b81900_40x40.png	260.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_diagonals-thick_20_666666_40x40.png	251.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_flat_10_000000_40x100.png	178.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_glass_100_f6f6f6_1x400.png	104.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_glass_100_fdf5ce_1x400.png	125.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_glass_65_ffffff_1x400.png	105.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_gloss-wave_35_f6a828_500x100.png	3.67kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_highlight-soft_100_eeeeee_1x100.png	90.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-bg_highlight-soft_75_ffe45c_1x100.png	129.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-icons_222222_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-icons_228ef1_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-icons_ef8c08_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-icons_ffd27a_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/images/ui-icons_ffffff_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/	544.71kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/bg-boxlinks-green.png	2.81kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr_button.png	779.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-badge-large.png	1.60kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-badge-white_full_size.png	131.56kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-badge-white.png	1.90kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-badge-white.pxm	383.70kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/[email protected]	4.28kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/[email protected]	8.18kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-icon_new.png	3.44kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/flattr-logo-beta-small.png	5.78kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/img/loader.gif	723.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/init.php	2.25kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/	50.02kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/	26.22kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_diagonals-thick_18_b81900_40x40.png	260.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_diagonals-thick_20_666666_40x40.png	251.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_flat_10_000000_40x100.png	178.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_glass_100_f6f6f6_1x400.png	104.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_glass_100_fdf5ce_1x400.png	125.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_glass_65_ffffff_1x400.png	105.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_gloss-wave_35_f6a828_500x100.png	3.67kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_highlight-soft_100_eeeeee_1x100.png	90.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-bg_highlight-soft_75_ffe45c_1x100.png	129.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-icons_222222_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-icons_228ef1_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-icons_ef8c08_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-icons_ffd27a_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/images/ui-icons_ffffff_256x240.png	4.27kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/jquery-ui/style.css	23.80kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/lib/	13.47kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/lib/httpconnection.php	4.78kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/lib/httpresponse.php	1.03kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/lib/oauth2client.php	7.66kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/postmeta-template.php	1.62kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/postmeta.php	3.13kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/readme.txt	11.95kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/redirect.php	3.69kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/settings-templates/	19.14kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/settings-templates/footer.php	289.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/settings-templates/header.php	1.52kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/settings-templates/plugin.php	12.68kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/settings-templates/user.php	4.66kB	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/uninstall.php	780.00B	No known conflicts with other themes or plugins.
wp-content/plugins/flattr/wizard.js	9.87kB	No known conflicts with other themes or plugins.

Which new shortcodes does Flattr add to WordPress?

The plugin Flattr added 1 new shortcode when it was installed with WP-CLI in our WordPress test environment.

ShortCode		Known Plugin or Theme conflicts
[flattr]		The flattr shortcode has potential conflicts with at least 2 other plugins or themes.

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 Flattr?

Flattr 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 Flattr?

When Flattr was activated and loaded for the first time it created 19 new options in the wp_options table. Any known conflicts will be shown in red.

Option Name		Known Conflicts
flattrss_custom_image_url		Potential conflict with 1 plugin or theme
http://testing.local/wp-content/plugins/flattr/img/flattr-badge-large.png
flattr_atags		The flattr_atags option doesn't have any known conflicts with other themes or plugins.
blog
flattr_aut		The flattr_aut option doesn't have any known conflicts with other themes or plugins.
1
flattr_aut_page		The flattr_aut_page option doesn't have any known conflicts with other themes or plugins.
1
flattr_button_style		The flattr_button_style option doesn't have any known conflicts with other themes or plugins.
js
flattr_cat		The flattr_cat option doesn't have any known conflicts with other themes or plugins.
text
flattr_compact		The flattr_compact option doesn't have any known conflicts with other themes or plugins.
(empty string)
flattr_global_button		The flattr_global_button option doesn't have any known conflicts with other themes or plugins.
1
flattr_lng		The flattr_lng option doesn't have any known conflicts with other themes or plugins.
en_GB
flattr_popout_enabled		The flattr_popout_enabled option doesn't have any known conflicts with other themes or plugins.
1
flattr_post_types		The flattr_post_types option doesn't have any known conflicts with other themes or plugins.
a:2:{i:0;s:4:"post";i:1;s:4:"page";}
flattr_relpayment_enabled		The flattr_relpayment_enabled option doesn't have any known conflicts with other themes or plugins.
1
flattr_top		The flattr_top option doesn't have any known conflicts with other themes or plugins.
(empty string)
flattrss_button_enabled		The flattrss_button_enabled option doesn't have any known conflicts with other themes or plugins.
1
flattrss_relpayment_enabled		The flattrss_relpayment_enabled option doesn't have any known conflicts with other themes or plugins.
1
flattrss_relpayment_escaping_disabled		The flattrss_relpayment_escaping_disabled option doesn't have any known conflicts with other themes or plugins.
(empty string)
user_based_flattr_buttons		The user_based_flattr_buttons option doesn't have any known conflicts with other themes or plugins.
(empty string)
user_based_flattr_buttons_since_time		The user_based_flattr_buttons_since_time option doesn't have any known conflicts with other themes or plugins.
1645528928
widget_flattrglobalwidget		The widget_flattrglobalwidget option doesn't have any known conflicts with other themes or plugins.
a:1:{s:12:"_multiwidget";i:1;}

During use Flattr 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 Flattr there were 20 options still present in the wp-options table:

flattr_atags
flattr_aut
flattr_aut_page
flattr_button_style
flattr_cat
flattr_compact
flattr_global_button
flattr_lng
flattr_popout_enabled
flattr_post_types
flattr_relpayment_enabled
flattr_top
flattrss_button_enabled
flattrss_custom_image_url
flattrss_relpayment_enabled
flattrss_relpayment_escaping_disabled
recently_activated
user_based_flattr_buttons
user_based_flattr_buttons_since_time
widget_flattrglobalwidget

Contact Flattr experts for help

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

Installing Flattr added 11 new function 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
flattr_feed_atom_head	0 conflicts	Fatal error: Cannot redeclare flattr_feed_atom_head()
flattr_feed_atom_item	0 conflicts	Fatal error: Cannot redeclare flattr_feed_atom_item()
flattr_feed_escape	0 conflicts	Fatal error: Cannot redeclare flattr_feed_escape()
flattr_feed_rss2_head	0 conflicts	Fatal error: Cannot redeclare flattr_feed_rss2_head()
flattr_feed_rss2_item	0 conflicts	Fatal error: Cannot redeclare flattr_feed_rss2_item()
flattr_init	0 conflicts	Fatal error: Cannot redeclare flattr_init()
flattr_post2rss	0 conflicts	Fatal error: Cannot redeclare flattr_post2rss()
new_flattrss_autosubmit_action	0 conflicts	Fatal error: Cannot redeclare new_flattrss_autosubmit_action()
new_flattrss_redirect	0 conflicts	Fatal error: Cannot redeclare new_flattrss_redirect()
static_flattr_url	0 conflicts	Fatal error: Cannot redeclare static_flattr_url()
the_flattr_permalink	0 conflicts	Fatal error: Cannot redeclare the_flattr_permalink()

Using Flattr 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 Flattr from the command line with WP-CLI

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

wp plugin install flattr

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

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

wp plugin install flattr --activate

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

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

wp plugin install flattr --force

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

wp plugin update flattr

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

wp plugin delete flattr

Where can you download earlier versions of Flattr?

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 Flattr 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 Flattr

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