`phpinfo` and `php -v` show different versions of PHP. How do you resolve this and change php -v to the desired version?

`phpinfo` returns the version being used by your web server. `php -v` is the version installed in your PATH (where the operating system looks for programs to run from the command line). Check your web server setup, to find the path of the PHP interpreter it is using. Then, either invoke it by entering the full path (like C:\Programs Files\php.exe or /usr/bin/php), or add its parent directory to the top of your path variable (as described in the article. In Linux, the php command may be symlinked to a specific version, while the web server invokes another version. You'll need to modify the symlink, or run the command for your distro to select an alternative.