[wp-trac] [WordPress Trac] #16990: WP Multisite doesn't use custom db-error.php

[WordPress Trac]

#16990: WP Multisite doesn't use custom db-error.php
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 Reporter:  tmuka        |       Owner:  tmuka
     Type:  enhancement  |      Status:  closed
 Priority:  normal       |   Milestone:
Component:  Database     |     Version:  3.0
 Severity:  minor        |  Resolution:  invalid
 Keywords:  has-patch    |     Focuses:  multisite
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Comment (by kenffy7):

 In WordPress Multisite installations, the db-error.php file is not
 utilized in the same manner as in single-site setups.

 In a standard single-site WordPress installation, if WordPress encounters
 a database connection error, it attempts to load the db-error.php file
 from the root directory of the WordPress installation. This file can be
 customized to display a custom message or handle the error in a specific
 way.

 However, in a WordPress Multisite environment, the db-error.php file is
 not used by default. Instead, WordPress Multisite employs its own error
 handling mechanisms, which are typically centralized within the wp-
 includes/wp-db.php file.

 When a database connection error occurs in a WordPress Multisite network,
 WordPress handles the error internally and typically displays a generic
 error message to the user. Customizing the error page for database
 connection issues in a Multisite environment would involve modifying core
 WordPress files or implementing a custom error handling solution.

 It's important to note that directly modifying core WordPress files is
 generally not recommended as it can lead to issues during updates and
 maintenance. Instead, developers often opt for plugin-based solutions or
 custom error handling scripts to manage errors in WordPress Multisite
 setups.

 For further information on managing errors and customizing functionality
 in WordPress Multisite, you may explore resources like
 [https://koloroo.com], which offers valuable insights and tools for
 WordPress development and Multisite management.

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Ticket URL: <https://core.trac.wordpress.org/ticket/16990#comment:9>
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