tricky /n

is /n counted as one character or two?
ie I want to cut any line breaks from the begining of a message
should it be
while(substr($message,0,1)=="\n") $message=substr($message,1);
or
while(substr($message,0,3)=="\n") $message=substr($message,2);

???

.oO(brendan)

>is /n counted as one character or two?

Depends.

>ie I want to cut any line breaks from the begining of a message
>should it be
>while(substr($message,0,1)=="\n") $message=substr($message,1);
>or
>while(substr($message,0,3)=="\n") $message=substr($message,2);

trim() exists.

Micha

On Mon, 25 Oct 2004 13:24:00 +0100, brendan
<brendan_nospam_@srl.cam.ac.uk_nospam> wrote:

>is /n counted as one character or two?

"/n" is two.
'/n' is two.
'\n' is two.
"\n" is ONE - a newline character.

>ie I want to cut any line breaks from the begining of a message
>should it be
>while(substr($message,0,1)=="\n") $message=substr($message,1);
>or
>while(substr($message,0,3)=="\n") $message=substr($message,2);

As a further complication, the end of line in Windows /is/ two characters -
"\r\n". Whereas on Unix, it's one, "\n". (I think on Macs it is just "\r").

--
Andy Hassall / <andy@andyh.co.uk> / <http://www.andyh.co.uk>
<http://www.andyhsoftware.co.uk/space> Space: disk usage analysis tool

brendan wrote:
> is /n counted as one character or two?

two characters, no matter how you delimit it

"/n" == '/n'


However, with a backslash instead, it is different:

strlen("\n") == 1
strlen('\n') == 2



> ie I want to cut any line breaks from the begining of a message
> should it be
> while(substr($message,0,1)=="\n") $message=substr($message,1);
> or
> while(substr($message,0,3)=="\n") $message=substr($message,2);
>
> ???

Neither. use ltrim()

http://www.php.net/ltrim
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