Stay alert to other potential regressions which arrived in Cypht 2.2.0 related to Unicode Support (Replace Standard PHP String Functions with Multibyte Counterparts)

[marclaporte]

#1217 by @indridieinarsson
is a partial revert in 2 of the 57 files changed in #1051 by @kambereBr

There could be others, so let's stay alert.

@jasonmunro Can you think of places we should specifically be careful about?

[indridieinarsson]

Some tips on this here:
https://stackoverflow.com/questions/10360764/there-are-simple-way-to-get-a-character-from-multibyte-string-in-php
and here :
https://stackoverflow.com/questions/3666306/how-to-iterate-utf-8-string-in-php

[marclaporte]

Some work is happening: #1230

[marclaporte]

All the related reported regressions have been solved, so closing this.