[php] PDO::__construct(): Server sent charset (255) unknown to the client. Please, report to the developers

Works for me >

the environment:

localhost
Windows 10
PHP 5.6.31
MYSQL 8

set:

default-character-set=utf8

on:

c:\programdata\mysql\mysql server 8.0\my.ini

  • Not works on> C:\Program Files\MySQL\MySQL Server 5.5\my.ini

Tools that helps:

C:\Program Files\MySQL\MySQL Server 8.0\bin>mysql -u root -p

mysql> show variables like 'char%';

mysql> show variables like 'collation%';

\m/

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