I have installed the PHP OCI8 module using a guide from this page.
But when I run my phpfile that has oci_connect it thrown out the page isn't working with error code "HTTP ERROR 500"
What did I do wrong? I tried the command php -m, and I found OCI8 there, and I tried php -v and I got no error at all, but when I tried running my PHP with something like function_exists('oci_connect') or extension_loaded('oci8') both give out false result.

