PHP is an HTML-embedded scripting language. Much of its syntax is borrowed from C, Java and Perl with a couple of unique PHP-specific features thrown in. The goal of the language is to allow web developers to write dynamically generated pages quickly.
/DontAddToPath
/InstallDir
/ThreadSafe
These parameters can be passed to the installer with the use of --params. For example: --params '"/ThreadSafe ""/InstallDir:C:\PHP"""'.
--params '"/ThreadSafe ""/InstallDir:C:\PHP"""'