WordPress uses the file wp-config.php, located at the root of the website, to provide configuration settings. Options include the connection to the database.
To ensure that these settings are Include make your edits prior to the line:
/* That’s all, stop editing! Happy blogging. */
It’s also used to add other configuration options.
Given in the table below are a number of the configuration options.
| Name | Description |
|---|---|
| WP_ALLOW_REPAIR | Enable automatic database optimisation support. define( ‘WP_ALLOW_REPAIR’, true ) |
| DISALLOW_FILE_EDIT | Prevent editing of files. Note when enabled the WordPress installation will not check for available theme, plugin and core updates. Available options: ●true ●false define (‘DISALLOW_FILE_EDIT’,true); |
| DISALLOW_FILE_MODS | Prevent editing of files and installer. Note when enabled the WordPress installation will not check for available theme, plugin and core updates. It removes the theme editor and plugin editor. Disables all file modifications include updates and update notifications. Available options: ●true ●false define( ‘DISALLOW_FILE_MODS’, true ); |
| FORCE_SSL_ADMIN | Force use of SSL for admin view of website. If using shared hosting the global server SSL will be used. This may affect how the browser reacts to the discrepancy between site and certificate, with it possibly preventing the site from being viewed. Available options: ●true ●false define(‘FORCE_SSL_ADMIN’, true); https://developer.wordpress.org/reference/functions/force_ssl_admin/ |
| WP_ALLOW_MULTISITE | Option to enable the support of multi sites on the single WordPress installation. Available options: ●true ●false define(‘WP_ALLOW_MULTISITE’, false); |
| SUBDOMAIN_INSTALL | Option to enable a domain based multi site operation. Available options: ●true ●false define(‘SUBDOMAIN_INSTALL’, true); |
| DOMAIN_CURRENT_SITE | Define the primary website on a multi site installation define(‘DOMAIN_CURRENT_SITE’, ‘My Website’); |
| PATH_CURRENT_SITE | Define the path for the primary website on a multi site installation define(‘PATH_CURRENT_SITE’, ‘/’); |
| SITE_ID_CURRENT_SITE | Define the Id of the primary website on a multi site installation define(‘SITE_ID_CURRENT_SITE’, 1); |
| BLOG_ID_CURRENT_SITE | Define the blog Id of the primary website on a multi site installation define(‘BLOG_ID_CURRENT_SITE’, 1); |
| WP_DEBUG | Turn debug mode on and off. the default value is false, ie. debugging is disabled. Setting the value to true enables debugging across the WordPress website. Available options: ●true ●false define(‘WP_DEBUG’, false); |
| WP_DEBUG_LOG | The enabled debug information is written to a log file. Located within the /wp-content directory of the website. This is a known directory and can Available options: ●true ●false define(‘WP_DEBUG_LOG’, false); |
| WP_DEBUG_DISPLAY | The enabled debug information is written to the display. Take care with this option the information provided is available to all who view the website. Available options: ●true ●false define(‘WP_DEBUG_DISPLAY’, false); |
| WP_MEMORY_LIMIT | Define the maximum amount of memory to be used by PHP. Memory limit . Value is given in MB not GB. The default value is 40MB. define(‘WP_MEMORY_LIMIT’, ‘256M’) |
| WP_MAX_MEMORY_LIMIT | Define the maximum memory as used within the WordPress admin area. Value is given in MB not GB. define(‘WP_MAX_MEMORY_LIMIT’, ‘256M’) |
| WP_POST_REVISIONS | Limit the number of post revisions. Saving too many revisions of posts and pages can bloat the database. By setting a limit on the number of revisions to be kept can keep a better control on the expansion of the database. After all, how many revisions will you need to revert back to? The example below sets a limit of 25. define( ‘WP_POST_REVISIONS’, 25 ); or to disable revisions: define( ‘WP_POST_REVISIONS’, false ); |
| WP_TEMP_DIR | Destination for live streaming, uploading of images, adding of plugins and updating of themes and WordPress core. Below ABSPATH is the absolute path to the root of the websites file space. This will include the directory structure on the server, dividing each website. To automate this use dirname(__FILE__) define(‘WP_TEMP_DIR’, ABSPATH . ‘/wp-content/temp/’); |
| WPLANG | Set the language for the website define (‘WPLANG’, ‘en-GB’); |
| CONCATENATE_SCRIPTS | The default is to join the reference to scripts(on the admin side) into a single URL reference, much like: <script src=”http://www.example.com/wp-admin/load-scripts.phpc=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils&ver=5.7.2′></script> An error in one of this files may cause an error on loading. Telling WordPress not to concatenate scripts may be used to counter this. define(‘CONCATENATE_SCRIPTS’,false); |
| WP_SITEURL | Corresponds to the entry siteurl within the database options table. The value configured within the wp_config.php file overrides that stored within the database. May be useful for ascertaining the value on a staging website copy of an original. define( ‘WP_SITEURL’, ‘https://www.example.com’ ); |
| WP_HOME | Corresponds to the entry home within the database options table.The value configured within the wp_config.php file overrides that stored within the database. May be useful for ascertaining the value on a staging website copy of an original. define( ‘WP_HOME’, ‘https://www.example.com’ ); |
| WP_CONTENT_DIR | Redefine the directory to be used in place of the default /wp-content/ define( ‘WP_CONTENT_DIR’, dirname(FILE) . ‘/extensions’ ); |
| WP_CONTENT_URL | Define the updated reference for the redefiend wp-content directory. define( ‘WP_CONTENT_URL’, ‘http://example.com/extensions’ ); |
| WP_PLUGIN_DIR | Redefine the directory used for plugins.Can be helpful regards website security, putting the plugins at a different location to that expected. This is the file system setting which is the full path on the server. Note there is no trailing slash at the end. define( ‘WP_PLUGIN_DIR’, dirname(FILE) . ‘/extensions/plugins’ ); |
| WP_PLUGIN_URL | Redefine the directory used for plugins. Can be helpful regards website security, putting the plugins at a different location to that expected. This is the full website URL (address) reference, which includes the http://, or https:// at the beginning, with no trailing slash at the end. define( ‘WP_PLUGIN_URL’, ‘http://example.com/extensions/plugins’ ); |
| PLUGINDIR | Override the wordPress default plugin directory define( ‘PLUGINDIR’, dirname(FILE) . ‘/extensions/plugins’ ); |
| UPLOADS | Redefine the uploads folder. define( ‘UPLOADS’, ‘wp-content/uploads’ ); |
| WP_DEFAULT_THEME | If the operational theme configured within wordPress’ appearance/theme admin page is removed, setting this before hand determines the fallback theme. Handy when a website has a number of themes installed. define(‘WP_DEFAULT_THEME’, ‘twentytwenty’); |
| CUSTOM_USER_TABLE | Redefine the table to be used for the storage of user info. define( ‘CUSTOM_USER_TABLE’, $table_prefix.’my_users’ ); |
| CUSTOM_USER_META_TABLE | Redefine the table to be used for the storage of user meta info. define( ‘CUSTOM_USER_META_TABLE’, $table_prefix.’my_usermeta’ ); |
| AUTOSAVE_INTERVAL | Set the time in seconds, between the auto saves of the post, page or other content being edited. define( ‘AUTOSAVE_INTERVAL’, 120 ); |
| EMPTY_TRASH_DAYS | Configure the number of days before deleting entries within the bin…? define( ‘EMPTY_TRASH_DAYS’, 3 ); |
| ALTERNATE_WP_CRON | Once enabled this creates a secodnary request which is used to serve the visitor their requested page. The original request contiunes being used to action the cron in the usual way. Implementing ALTERNATE_WP_CRON can be used as a part of a strategy to improve a WordPress’ website response. Available options: ●true ●false define( ‘ALTERNATE_WP_CRON’, true ); |
| DISABLE_WP_CRON | Disabling the WordPress cron and using the system cron can be a speed boost. Use this to disable the wordPress cron. Don’t forget to configure the server cron as its replacement. Available options: ●true ●false define( ‘DISABLE_WP_CRON’, true ); |
| WP_CRON_LOCK_TIMEOUT | WordPress uses a visitor visiting the website to initiate cron actions. There can be a impact on the website’s response. To reduce this add a timed separation, settign a minimum separation between callign the cron on visits. The example below sets this to 120 seconds (2 minutes). define( ‘WP_CRON_LOCK_TIMEOUT’, 120 ); |
| FS_CHMOD_FILE | Override the default permissons assigned to files. define( ‘FS_CHMOD_FILE’, 0644 ); |
| FS_CHMOD_DIR | Override the default permissons assigned to directories. define( ‘FS_CHMOD_DIR’, 0755 ); |
| WP_HTTP_BLOCK_EXTERNAL | Used to prevent WordPress from making external requests. define( ‘WP_HTTP_BLOCK_EXTERNAL’, true ); |
| WP_ACCESSIBLE_HOSTS | To counter the restrictions imposed by WP_HTTP_BLOCK_EXTERNAL add an accessible whitelist of sites. The list of sites is comma separated. define( ‘WP_ACCESSIBLE_HOSTS’, ‘wordpress.org’ ); |
| ALLOW_UNFILTERED_UPLOADS | Permit uploading of files of any type. define( ‘ALLOW_UNFILTERED_UPLOADS’,true; |
Take care when editing the file not to break the link to the database. And don’t expose information about your website.
