Windows Defender Threat in MY_string_helper.php

[harkus]

Windows defender is seeing this file as Backdoor:Win32/Dirtelti!ml
Not sure what part of the PHP code is causing it, but it's problematic.

[daylightstudio]

It's likely the eval_string() function because it uses the eval() function. It's essentially a way to evaluate PHP code from a string (which can be dangerous if the string is not trusted). It was directly pulled from the CodeIgniter's Loader::_ci_load method. It's not a function that is used by default in the code unless you explicitly need/want to.