~~Please Help! this can't be that hard.

[sfullman]

Hi there,

I'm working with regular expressions and I wonder how to represent an ascii character? Esp chr(9) tab, char(10) newline(?) and chr(13) carriage return.

I'm trying to say, "a space or a tab or a return character, in any combination, any number of times" -- in otherwords, "white space" for source code. it would be like this I presume:

( |tab|newline|carriagereturn)*

except of course I need to know how to represent those via regular expressions.

Thanks in advance,
Sam

[retoknaak]

\n =new line (10)
\r = carriage return (13)
\t =tab
. =any charachter

Caution: of you use "...." you need to backslash one more: \n, \r....

[[deleted]]

But, if you use double baclskash, you make the backslash a backslash instead of an escape character

backslash n - is interpreted as - newline

and

backslash backslash n - is interpreted as - backslash n

Sam, what about the comma and fullstops?
Aren't you just looking for a way to define the end of a word? If you are, preg_match has special commands for those:

http://www.php.net/manual/en/pcre.pattern.syntax.php