How Can I Use Multiple PHP Versions Simultaneously with XAMPP?

Using Multiple PHP Versions in XAMPP

Introduction

XAMPP is a popular web development tool that includes Apache, MySQL, and PHP. By default, XAMPP comes with a single PHP version. However, there may be situations where you need to use multiple PHP versions, such as for running legacy projects that still rely on older PHP functions.

Options for Using Multiple PHP Versions

There are several ways to use multiple PHP versions in XAMPP:

Option 1: Specify PHP Version for Specific Directories

This option allows you to configure specific directories to run with a particular PHP version. To do this:

1. Add the following lines to your Apache configuration file (httpd-xampp.conf):

ScriptAlias /php56 "C:/xampp/php56"
Action application/x-httpd-php56-cgi /php56/php-cgi.exe

2. Add the following lines to the Apache configuration section for each directory you want to run with a specific PHP version:

<Directory "C:\xampp\htdocs\my_old_project1">
    <FilesMatch "\.php$">
        SetHandler application/x-httpd-php56-cgi
    </FilesMatch>
</Directory>

Option 2: Run an Older PHP Version on a Separate Port

This option allows you to run an older PHP version on a different port than XAMPP's default. To do this:

1. Add the following lines to your Apache configuration file:

Listen 8056
<VirtualHost *:8056>
    <FilesMatch "\.php$">
        SetHandler application/x-httpd-php56-cgi
    </FilesMatch>
</VirtualHost>

2. Restart Apache.

When you access a PHP file on port 8056 (e.g., http://localhost:8056/old_project.php), it will run with the older PHP version.

Option 3: Run an Older PHP Version on a Virtualhost

This option allows you to create a virtualhost that uses a specific PHP version. To do this:

1. Create a directory for the virtualhost (e.g., htdocs56).
2. Add the virtualhost to your Apache configuration file:

<VirtualHost localhost56:80>
    DocumentRoot "C:\xampp\htdocs56"
    ServerName localhost56
    <Directory "C:\xampp\htdocs56">
        Require all granted    
    </Directory>
    <FilesMatch "\.php$">
        SetHandler application/x-httpd-php56-cgi
    </FilesMatch>
</VirtualHost>

3. Restart Apache.

When you access a PHP file on the virtualhost (e.g., http://localhost56/old_project.php), it will run with the older PHP version.

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