Unable to get php_oci8_12c.dll to load

[system]

First off, let me start of with my environment:

Windows 2008 R2 - 64 bit
IIS 7.0

PHP 5.6.2 - Non Thread Safe - 64 bit
Installed at C:\PHP\

Oracle Instant Client 12.1.0.2 - 64 bit
Installed at C:\oracle\instantclient_12_1

Path variables:
%SystemRoot%\system32;
%SystemRoot%;
%SystemRoot%\System32\Wbem;
%SYSTEMROOT%\System32\WindowsPowerShell\v1.0;
C:\oracle\instantclient_12_1;
c:\php;
C:\Windows\SysWOW64;
C:\PHP\ext

PHP is working and I can run phpinfo and it shows all is working, however oci does not load and I am unable to connect to Oracle in my code.

When starting PHP in the command line, I am getting this error:

PHP Warning: PHP Startup: Unable to load dynamic library ‘C:\PHP\ext\php_oci8_12c.dll’ - %1 is not a valid Win32 application. in Unknown on line 0

I have gone through about 5 hours of searching on the web and trying various things, but with no luck. I am hoping there is someone out there that can help.

[Topcoder]

Try installing the 32 bit version of oracle - I know you don’t want to. But you should do it and see if it clears up the issue.

[sanidhya]

I’m facing the same issue, I’m using the 32 bit PHP and rest all the configuration is same.