A lot of things have changed since that 7.6.0 post. Whatever was written there was specific to 7.6.0 (and php 5). You are currently on 7.7.3 (with php 7. This is why it was asked what version you were on.
Something that may get fixed in one version, may have changes made to a related item in later versions, which may change the behavior of the overall program, which may break or better/improve or even make the previous changes obsolete.
