How to install oci8 in php 7.4.9 in windows 10

I am using windows 10(x64). an using php 7.4 and download from here... https://windows.php.net/download#php-7.4
I unzip it and placed in c:\php7.4.9 and uncomment some extension in php.ini I need to connect to oracle9i and mysql, so I uncomment the oci8_12c, oci8 and pdo_mysql my pdo_mysql works fine.
Everytime I run php. it will prompt my oci and oci8_12c are not valid win32 command and the phpinfo() shows seems my oci is not installed....
I tried to find some other dll from pecl to replace the original one. Still the same.
anyone can help Thanks a lot.
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