If WordPress displays the message \
What was this error and how did it happen? Your site can be seen as two main parts of a file and a database. The MySQL database stores a large amount of data displayed on the site, such as user names, passwords, posts, categories, labels, and other content. The PHP file is built to request this information from the database, which sends it along with the file. This provides both sets of information to display the site when the browser requests to load the page. If there is a problem with the database, the PHP file can request information from the database, but if the database provides the requested data without responding, an error will be left. The
Error setting database connection PHP files cannot connect to the database for many reasons. Because this is true, the most difficult part of correcting this error is to determine the exact cause. In addition to being unable to connect to the database, more specific reasons for this error include: Errors may occur while installing or migrating WordPress. The database may be accidentally deleted. You may have entered invalid credentials. Conflicts with database prefix. File permissions may be set incorrectly. The site URL may be incorrect. The plug-in or theme that caused the problem may be installed. The file or database may be corrupt. The server may be down or overloaded. Sometimes, before you break everything, you might make some changes to a site that looks innocent enough, and then an error occurs. Therefore, testing before releasing changes may help prevent this in the future. The
For more information about testing before pushing changes in real time, see other posts. How to use WordPress multisite cloner for fast and stable error testing cloner to set up a WordPress dump environment, how to use wampserver to migrate WordPress to the web for local development, and how to install xampp and WordPress locally on pc\/windows If you are reading the article on how to use vagrant to set WordPress locally as WordPress, and how to use the WordPress test environment to set the desktop server to set WordPress locally as WordPress in 5 minutes to develop WordPress locally, this error is likely to occur now. You may want to try the following modification immediately. Start with the most common solutions and move down the list to more complex problems and modifications, so start with the first one. The
Before starting: backup and restore! It is recommended that you back up the entire site as is before changing the site to correct this error, just in case. Small hand
The database name and user name listed by WP config. Compare with the same information listed in the PHP file. If the details are inconsistent, WP config. Change these details in the PHP file to make them the same. Don’t forget to save your changes. Defined above (\
For more information on how to properly set file permissions, see the post for understanding file permissions and site security. However, there is an easier way to reset file permissions. You can replace all core files with new files. To do this, WordPress. the latest copy of word press from org. Unzip the folder, WP config sample. Delete the PHP file and the \/wp content\/ folder. Both of them contain important data required for the operation of the site, so you don’t want to spend and replace all the costs. Removing from the new replica prevents the site from accidentally overwriting. Don’t forget to select an option to send a new copy of the WordPress core to the site using a common FTP client and overwrite all old files with the new files. This eliminates the need to worry about other steps to delete the old file before sending it to the new file. For more information about using FTP, please check the post on how to use FTP correctly on WordPress. Database recovery database table recovery usually works when everything else you try doesn’t seem to perform a trick. This is especially true when you can access the front end or the back end, but not both. To recover the database, use WP config on the cPanel. Open the PHP file or it via FTP, then add the next line and save the file. Unlike most other edits to the file by loading the summary jennimckinnon\/c44c0e1a767ff17188eda126caee89d6, where it is placed is not important unless it is placed in the middle of other lines. As with other additional items, you can place them before the \
