update php windows command line code example

Example 1: php version not update after windows env file

You can uninstall composer, and while re-installing it will ask you to point 
at your PHP directory which is going to be C:\wamp64\bin\php (usually) at 
that point you can choose which PHP version you would want to use. good 
luck.

Example 2: update php version windows

Take a backup of your htdocs and data folder (subfolder of MySQL folder), reinstall upgraded version and replace those folders.

Note: In case you have changed config files like PHP (php.ini), Apache (httpd.conf) or any other, please take back up of those files as well and replace them with newly installed version.