Unable to load dynamic library php_oci8_12c.dll - php

Question

Ok, so i have the same problem.
To fix it i had to install oracle instant client and an NTS dll of oci8_12c
when i start my WAMP i get this error:
[20-Feb-2018 13:40:38 UTC] PHP Warning: PHP Startup: Unable to load dynamic library 'd:/wamp64/bin/php/php5.6.31/ext/php_oci8_12c.dll'
in Unknown on line 0
I also added the ext folder and oracle instant client to PATH
PHP version: 5.6.31
Oracle instant client 11.2.0.4.0 x64
NTS x64 php_oci8_12c.dll
I downloaded Visual Studio 2005 (required for the oracle instant client)
I have a 64 bit windows 10 system
What do I do?
EDIT
php.ini
extension=php_oci8_12c.dll without ";"
Thead-safe dll gives the same issue

Answer 1

I enabled oci8 in wamp64 after to do this:
copy oci.dll, oraociei12.dll, and oraons.dll to apache/bin folder.
Reference: https://community.oracle.com/thread/4178182

Answer 2

I hope you solved your problem, I'm posting for the next ones to face this problem.
I finally found, after 4 days, the solution to my problem.
If, after adding to your PATH environment variables the complete path to instant client, e.g: C:\instantclient_{version}
and after restarting your web server (IIS, WAMP, XAMP, etc.) you still get one of those error messages:
There is something wrong with your system - please check that PATH includes the directory with Oracle Instant Client libraries
or
PHP Warning: PHP Startup: Unable to load dynamic library 'c:/wamp64/bin/php/php5.6.38/ext/php_oci8_12c.dll' - The specified procedure cannot be found.
It is because PHP still can't access the files from Instant Client.
To solve that problem, you have to add the complete path to your instant client, but on the System variables, not in the User variables.
That being done, simply restart your web server, and you're done :)