wpsnoop: fix EM Object Cache plugin conflicts, errors & issues

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

Troubleshooting theme and plugin conflicts is easier when you know what EM Object Cache 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 EM Object Cache

Database Issues

ShortCode Issues

Function Issues

File System Issues

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When you need professional help with WordPress: get help here

What does EM Object Cache version 2.1 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for EM Object Cache to perform differently in your installation, previous versions before 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 2.1 of EM Object Cache 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 EM Object Cache 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: EM Object Cache

Plugin Slug: em-object-cache Internal ID: 23936 Addon Type: Plugin Version: 2.1 Price: Free Source: WordPress.org Files: 38 (94.44kB) Short Codes: [ / ] 0 Database Tables: 0 Function Count: 14 Code Review: Search Provit

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Which new files does EM Object Cache add to WordPress?

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

The plugin EM Object Cache added 38 new files when it was installed with WP-CLI in our WordPress test environment.

Type & Path	Size	Conflicts
wp-content/object-cache.php	8.88kB	The wp-content/object-cache.php file has potential conflicts with at least 6 other plugins or themes.
wp-content/plugins/em-object-cache/	85.56kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/cache/		No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/core.php	3.73kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lang/	20.88kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lang/emobjectcache-ru_RU.mo	5.94kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lang/emobjectcache-ru_RU.po	9.35kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lang/emobjectcache.pot	5.59kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/	26.75kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ApcCache.php	1.45kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/BaseCache.php	6.85kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/CacheFactory.php	1.66kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/eAcceleratorCache.php	1.57kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/FileCache.php	2.36kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/Memcache.php	1.38kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/Memcached.php	1.38kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/PageHandlers.php	5.20kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ph/	1.32kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ph/Memcache.php	677.00B	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ph/Memcached.php	678.00B	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/xCache.php	1.31kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ZendDiskCache.php	1.13kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/lib/ZendShmCache.php	1.13kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/object-cache.php	8.88kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/options.php	187.00B	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/	17.08kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/ApcCache.php	1.19kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/BaseCache.php	162.00B	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/eAcceleratorCache.php	1.20kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/FileCache.php	1.61kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/header.php	292.00B	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/Memcache.php	2.75kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/Memcached.php	2.62kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/options-object-cache.php	3.71kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/xCache.php	1.19kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/ZendDiskCache.php	1.19kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/pages/ZendShmCache.php	1.19kB	No known conflicts with other themes or plugins.
wp-content/plugins/em-object-cache/readme.txt	8.06kB	No known conflicts with other themes or plugins.

Which new shortcodes does EM Object Cache add to WordPress?

The plugin EM Object Cache 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 EM Object Cache?

EM Object Cache 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 EM Object Cache?

None. There may be settings which have been changed by installing the EM Object Cache plugin however we do not yet track those changes.

What new PHP functions does EM Object Cache declare when it is active?

Installing EM Object Cache added 14 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
wp_cache_add	0 conflicts	Fatal error: Cannot redeclare wp_cache_add()
wp_cache_add_global_groups	0 conflicts	Fatal error: Cannot redeclare wp_cache_add_global_groups()
wp_cache_add_non_persistent_groups	0 conflicts	Fatal error: Cannot redeclare wp_cache_add_non_persistent_groups()
wp_cache_close	0 conflicts	Fatal error: Cannot redeclare wp_cache_close()
wp_cache_decr	0 conflicts	Fatal error: Cannot redeclare wp_cache_decr()
wp_cache_delete	0 conflicts	Fatal error: Cannot redeclare wp_cache_delete()
wp_cache_flush	0 conflicts	Fatal error: Cannot redeclare wp_cache_flush()
wp_cache_get	0 conflicts	Fatal error: Cannot redeclare wp_cache_get()
wp_cache_incr	0 conflicts	Fatal error: Cannot redeclare wp_cache_incr()
wp_cache_init	0 conflicts	Fatal error: Cannot redeclare wp_cache_init()
wp_cache_replace	0 conflicts	Fatal error: Cannot redeclare wp_cache_replace()
wp_cache_reset	0 conflicts	Fatal error: Cannot redeclare wp_cache_reset()
wp_cache_set	0 conflicts	Fatal error: Cannot redeclare wp_cache_set()
wp_cache_switch_to_blog	0 conflicts	Fatal error: Cannot redeclare wp_cache_switch_to_blog()

Using EM Object Cache 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 EM Object Cache from the command line with WP-CLI

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

wp plugin install em-object-cache

How to activate EM Object Cache from the command line with WP-CLI

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

wp plugin install em-object-cache --activate

How to reinstall EM Object Cache from the command line with WP-CLI

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

wp plugin install em-object-cache --force

How to update EM Object Cache to the latest version from the command line with WP-CLI

wp plugin update em-object-cache

How to delete EM Object Cache from the command line with WP-CLI

wp plugin delete em-object-cache

Where can you download earlier versions of EM Object Cache?

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 EM Object Cache 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 EM Object Cache

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