Like
Username with 2-20 chars
^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$
-
and _
chat is fine but with if not set \
before .
? I try works both ways? Why use? \.
or just .
Thanks!
Like
^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$
-
and _
chat is fine but with if not set \
before .
? I try works both ways? Why use? \.
or just .
Thanks!
In a character class (square brackets) any character except
^
,-
,]
or\
is a literal.
Which is why it works both ways.