Use mb_substr() for correct abbreviation of non-ASCII characters

[xalt7x]

When using substr() or another method to reduce a string to/by 1 byte, many UTF-8 characters are lost (displayed as � ). Switching to mb_substr() fixes this.

[xalt7x]

The problem is easily reproducible with Cyrillic/Ukrainian characters (e.g., "Джон Дое" as the User/Owner name, or "Навички обслуговування клієнтів" string for "Key Skills").

Additional information:

If you’re working with strings encoded as UTF-8 you may lose characters when you try to get a part of them using the PHP substr function. This happens because in UTF-8 characters are not restricted to one byte, they have variable length to match Unicode characters, between 1 and 4 bytes.

[RussH]

Thanks @xalt7x !