Thanks for your reply first!
But sorry~ I followed it twice and OCI8 still not be loaded in phpinfo();
The first try, I was replace the 12c.dll
The second try is reinstall xampp and uncomment 12c.dll then it shows
"The procedure entry point OCIStmtGetNextResult could not be located in the dynamic link library OCI.dll."
I found the solve... finally...!!
Add, oraociei12.dll, and to apache/bin folder. Replace the existing one