call to undefined function mb_strimwidth

Question

Months ago I made a short code that uses mb_strimwidth() to exactly fit some text into a table cell, putting dots at the end of a truncated string. Now, after some

Answer 1

All mb_* functions are provided by a PHP extension called Multibyte String, internal name mbstring

You probably don't have the extension active or installed. On most Linux distros you can install the package php-mbstring to install and activate this extension.

Apache needs to be restarted afterwards if you are using mod_php