Nope, "\" is not a typo. The back slash is in most programming languages is an escape character. Since the first instance is not printed, you need to give two slashes. For exampe:
$str = "c:\winnt\system32";
will actually print or be interpreted as:
c:winntsystem32
unless you double the slashes. This is one of the reasons why all other OS's (that I'm aware of) use the Unix forward slash. Having to double your folder deliminators is stupid, wastful, and time consumming. Just what we'd expect out of MS🙂
However, in the context of this thread...... escaping slashes will work only inside PHP scripts, not in php.ini directives. For php.ini directives you must use Unix style forward slashes in your pathes.
Geoff A. Virgo