What are the potential risks of using "experimental" PHP versions, especially in relation to Apache crashes and PHP CLI bugs?

Using experimental PHP versions can pose risks such as Apache crashes and PHP CLI bugs due to potential instability and untested features. To mitigate these risks, it is recommended to stick to stable PHP versions for production environments and only use experimental versions in a controlled testing environment.

// Example of using a stable PHP version in Apache configuration
<IfModule php7_module>
    LoadModule php7_module /path/to/php7.so
    AddHandler php7-script .php
    DirectoryIndex index.php
</IfModule>