wpsnoop: fix QR Code plugin conflicts, errors & issues
When the plugin QR Code 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 QR Code, plus learn which plugins and/or themes could be in conflict with QR Code.
Troubleshooting theme and plugin conflicts is easier when you know what QR Code 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 QR Code
When you need professional help with WordPress: get help here
What does QR Code version 1.2 add to WordPress? Answers Here.
This is an automatically generated report - it is possible for QR Code to perform differently in your installation, previous versions before 1.2 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 of QR Code 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 QR Code 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: QR Code
Which new files does QR Code add to WordPress?
This section will populate with a table showing an icon, size and filepath.
| Type & Path | Size | Conflicts |
|---|---|---|
| wp-content/plugins/qr-code/ | 43.96kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/lang/ | 2.50kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/lang/qrcode-hu_HU.mo | 0.98kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/lang/qrcode-hu_HU.po | 1.52kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/qrcode.php | 4.74kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/readme.txt | 873.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/screenshot-1.png | 9.05kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/qr-code/screenshot-2.png | 26.82kB | No known conflicts with other themes or plugins. |
Which new shortcodes does QR Code add to WordPress?
| ShortCode | Known Plugin or Theme conflicts | |
|---|---|---|
| [qrcode] | The qrcode shortcode has potential conflicts with at least 14 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 options are added to the wp-options table by QR Code?
| Option Name | Known Conflicts | |
|---|---|---|
| widget_qr-code-widget | The widget_qr-code-widget option doesn't have any known conflicts with other themes or plugins. | |
During use QR Code 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.
What new PHP functions does QR Code declare when it is active?
| Function | Conflicts | Common Errors | |
|---|---|---|---|
| qr_code | 0 conflicts | Fatal error: Cannot redeclare qr_code() | |
| qrcode_shortcode | 0 conflicts | Fatal error: Cannot redeclare qrcode_shortcode() |
Using QR Code 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 QR Code from the command line with WP-CLI
Navigate to the root of your WordPress installation and type the following command:
How to activate QR Code from the command line with WP-CLI
To immediately activate QR Code after WP-CLI downloads the latest version you can use the following command:
How to reinstall QR Code from the command line with WP-CLI
To force a reinstallation of QR Code which overwrites the current plugin without asking for confirmation you can use the following command:
How to update QR Code to the latest version from the command line with WP-CLI
How to delete QR Code from the command line with WP-CLI
Where can you download earlier versions of QR Code?
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 QR Code 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 QR Code
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 QR Code. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.
