Add option to email any critical error message to an admin

[Jimmi08]

Motivation

The troubles of the hosting provider is without your control. In my case, the database server was out for some time and users saw an English message about a critical error with advice to check the configuration file. But it wasn't true, the configuration file was correct.

Proposed Solution

• if there is a live site - no debug, developer mode, not localhost or something like that, display the user some nice message about troubles on site, we are working on it
• replace file name e107_config.php similar way as other error strings - your configuration file - a person that is able to fix this knows the file name of the config file
• don't display the database name in the error message on the live site
• improve message look
• translate messages (those from lan_error.php) - site language should be cached in a file (so available without database connection)
• add main admin notification if site is down because this issue

Additional Context

It looks like this now:

At least this is helping:

It would be nice to update the legacy code too. My editor is telling me this and I really don't know if they are false errors or how it is possible that it is workin

[CaMer0n]

@Jimmi08 Did you try uncommenting the following in e107_config.php ?

// define('e_LOG_CRITICAL', true); // log critical errors but do not display them to user.

[CaMer0n]

Added a new option as well:

define('e_EMAIL_CRITICAL', 'mail@somewhere.com');

The server will email in the case of a critical error, and the end user will see:

CRITICAL ERROR:
The server encountered an internal error or misconfiguration and was unable to complete your request