I am generating JSON valid string like: [{"head":"Model Name","body":"T102HA-GR015T"}]
The string generated on UTF-8 page with header('Content-Type: text/html; charset=utf-8'); and file encoding UTF-8.
The connection to database made by PDO with charset=utf8
DB table & column collations are utf8_general_ci
When it inserted to db it look like:
For Russian: [{"head":"\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u043c\u043e\u0434\u0435\u043b\u0438","body":"T102HA-GR015T"}]
For Hebrew: [{"head":"\u05d3\u05d2\u05dd","body":"T102HA-GR015T"}]
And I want it to be inserted to db in actual lang characters, like:
For Russian: [{"head":"Название модели","body":"T102HA-GR015T"}]
For Hebrew: [{"head":"דגם","body":"T102HA-GR015T"}]

$array = json_encode($array, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);