How to Connect PHP to Oracle Database on Windows (XAMPP Step-by-Step Guide)

In this tutorial, I’ll show you how to connect PHP to an Oracle database on Windows using XAMPP.
Unlike MySQL, Oracle is not supported by default in PHP — so we’ll go step by step to set everything up properly.
💻 What you’ll learn:
* Install Oracle Instant Client
* Configure Windows environment variables
* Find your PHP version using `phpinfo()`
* Download the correct Oracle DLL from PHP
* Enable `oci8` extension in php.ini
* Test Oracle connection using PHP

00:00 – Introduction and Requirements (XAMPP / PHP server)
00:19 – Step 1: Download Oracle Instant Client
00:41 – Step 2: Set Environment Variables (Path)
01:10 – Step 3: Download PHP OCI8 DLL
01:18 – Check your PHP version (phpinfo)
01:35 – Choose correct DLL version
01:52 – Step 4: Copy DLL files to php/ext
02:01 – Step 5: Configure php.ini (enable oci8)
02:46 – Step 6: Restart XAMPP server
02:56 – Common error: undefined function oci_connect

Download Oracle instant client :
https://www.oracle.com/database/technologies/instant-client/winx64-64-downloads.html
Download correct OCI8 DLL
https://pecl.php.net/package/oci8

⚠️ Common error fix included:
If you see `Call to undefined function oci_connect()`, I’ll show you how to fix it.
This guide works for:
* Windows 10
* Windows 11

Perfect for students, developers, and anyone working with Oracle + PHP integration.
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Видео How to Connect PHP to Oracle Database on Windows (XAMPP Step-by-Step Guide) канала Ark Coding