How to disable deprecated errors in php

[Red Squirrel]

I have an older version of phpmyadmin running on my development server and every now and then I get a bunch of notices of something deprecated and if I hit refresh it's gone.

I am trying to just suppress these completely but so far nothing seems to be working. As a debug measure I have the following code in index.php:

//error_reporting(E_ALL & ~E_NOTICE);

//error_reporting( E_ALL & ~E_DEPRECATED & ~E_NOTICE);

error_reporting(0);

echo($test);//debug

1 ? 2 : 3 ? 4 : 5; //debug

Despite even turning errors completely off I am still getting notices for deprecated code. (the last debug line)

I don't want to modify anything in php.ini since for development reasons I have all errors, warnings etc turned up on that server, but for this particular script I just want them off. I know the error_reporting function is working because I can suppress the notices (uninitialized variable $test) but for some reason it's not working for deprecated. Any way to turn deprecated warnings off 100%?

Server is running Devuan with PHP 7.4.

 

[Red Squirrel]

Figured it out, turns out for that specific parameter you can't do it through the php script, only via php.ini or .htaccess. I just turned off error reporting for that folder in .htaccess and it fixed it.