This post will help you download & install php 8 on Windows 10 and set php 8 to system's path, verify php version and run the php 8 local development server.
Download & Install PHP 8
- Head to php.net
 - Click Download button
 - Click Windows Downloads
 - Download Thread safe 32/64 bit zip package for your system type
 - Extract the zip package
 - Paste the extracted folder onto your desired drive (C?D?E?)
 - Rename this folder to php8
 - One this folder and look for php.ini-development file
 - Make a copy of this file and rename copy version to php.ini
 - Open php.ini file with your preferred text editor and uncomment PHPIniDir “ext”
 - Save the file and close the editor.
 
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Set PHP 8 to System's Path
- Open php8 folder and copy and folder path
 - Press Windows Key on your keyboard and type 'variable' and hit Enter
 - Click Environment Variables
 - Click Edit and Click NEW on the right
 - Paste the php8 folder path
 - Click OK, OK, OK
 
Verify PHP Version
- Launch Command Prompt
 - Type php -v
 
Run PHP Local Development Server
- Create a Folder on your desktop
 - Open this folder with your text editor
 - Create a file and save as filename.php
 - Write PHP code and save it
 - <?php echo phpinfo(); ?>
 - Navigate your CMD to this folder
 - Run PHP server
 - php -S 127.0.0.1:3000
 - Launch Browser
 - Navigate to 127.0.0.1:3000/filename.php
 
    
Top comments (2)
This part is confusing:
Click Environment Variables
Click Edit and Click NEW on the right
I am assuming I am editing the Path variable under System variables in that section.
Also, after setting the Path, on my machine at least, I needed to reboot before CMD would recognize the PHP command.