pdo's error with oracle

Question

When I use PDO to connect to Oracle DBMS,I got this problem:

SQLSTATE[HY000]: OCIEnvNlsCreate: Check the character set is valid and that PHP has access to Oracle libraries and NLS data (ext\pdo_oci\oci_driver.c:619).

I have added ORACLE_HOME,NLS_LANG,PATH to environment variables and php's config is right.

follows are my setting and configs:

NLS_LANG ORACLE_HOME PATH php-oci PDO php.ini

After setting environment variables I used set PATH=C: in cmd and restarted cmd to take effect.

My platform is Windows Server 2008 and I'm using a web development environment PHPStudy with php7.0.12.And I got instantclient_12_2 from Oracle website Instant Client for Microsoft Windows (32-bit)(12.2.0.1.0)

Answer 1

I have solved this problem by copy oraociei12.dll in instantclient_12_2 to E:\phpStudy\PHPTutorial\php\php-7.0.12-nts. What a magic！