php在命令行中设置ini

On the Linux command line, is it possible to run a command to get a php ini settings value?

I understand that i can echo phpinfo() or simply go and inspect the ini file, but I cant see a command to run that will display the value directly on the command line.

php -i | grep 'my_value'

or

php -r "echo ini_get('my_value');"

or

grep 'my_value' /path/to/php.ini