I have downloaded, installed and activated "php_pdo_sqlsrv_56_nts.dll" and "php_sqlsrv_56_nts.dll" by moving to the ext directory of php5.6.31 and adding to php.ini the lines:
extension = php_sqlsrv_56_nts.dll
extension = php_pdo_sqlsrv_56_nts.dll
even with a non-thread-safe version the extensions still do not appear on phpinfo while they are active .. would I have forgotten something?
PS: I need the driver because I have an error "Undefined class constant PDO :: SQLSRV_ENCODING_UTF8"
Win 7 x64 Wamp 3.1.0 PHP 5.6.31 (version 3.2 sqlsrv)
Thank you all