什么是PHP的parse_ini_file（）扫描程序模式？

PHP 5.3 added a $scanner_mode parameter to parse_ini_file(). What is it?

The documentation isn't very useful:

scanner_mode

Can either be INI_SCANNER_NORMAL (default) or INI_SCANNER_RAW. If INI_SCANNER_RAW is supplied, then option values will not be parsed.

What is an "option value" in this context?

I believe RAW will not do any parsing of the values, so "on"/"off" will not be understood as true/false and would require using "1" and "0"

"option" in this case, I think refers to the value of each ini key/value pair.