"Christoph M. Becker" in php.general (Wed, 20 Feb 2019 20:47:16 +0100): >On 20.02.2019 at 20:23, Yves Goergen wrote: > >> $this->connection->loadExtension('json1'); // or json1.dll >> >> --> Not supported in multithreaded Web servers > >This is not particularly an XAMPP issue, but rather a limitation of the >SQLite3 extension[1]. Anyhow, the simplest solution would be to use PHP >7.3, where the JSON1 extension of SQLite3 is supposed to be available in >the Windows builds by default[2]. If you need an older PHP version, you >likely have to compile ext/sqlite3 yourself. In a way it is a XAMPP issue, because XAMPP sticks to mod_php and PHP threadsafe (ZTS). Upgrading to PHP 7.3 will not help: https://github.com/php/php-src/blob/PHP-7.3/ext/sqlite3/sqlite3.c#L358 #ifdef ZTS if ((strncmp(sapi_module.name, "cgi", 3) != 0) && (strcmp(sapi_module.name, "cli") != 0) && (strncmp(sapi_module.name, "embed", 5) != 0) ) { php_sqlite3_error(db_obj, "Not supported in multithreaded Web servers"); RETURN_FALSE; } #endif This code did not change from PHP 7.0: https://github.com/php/php-src/blob/PHP-7.0/ext/sqlite3/sqlite3.c#L366 -- Jan