tricky /n

[brendan]

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($m essage,0,1)=="\ n") $message=substr ($message,1);
or
while(substr($m essage,0,3)=="\ n") $message=substr ($message,2);

???

[Andy Hassall]

Re: tricky /n

On Mon, 25 Oct 2004 13:24:00 +0100, brendan
<brendan_nospam _@srl.cam.ac.uk _nospam> wrote:
[color=blue]
>is /n counted as one character or two?[/color]

"/n" is two.
'/n' is two.
'\n' is two.
"\n" is ONE - a newline character.
[color=blue]
>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);[/color]

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.andyhsoftwa re.co.uk/space> Space: disk usage analysis tool

[Michael Fesser]

Re: tricky /n

.oO(brendan)
[color=blue]
>is /n counted as one character or two?[/color]

Depends.
[color=blue]
>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);[/color]

trim() exists.

Micha

[Pedro Graca]

Re: tricky /n

brendan wrote:[color=blue]
> is /n counted as one character or two?[/color]

two characters, no matter how you delimit it

"/n" == '/n'


However, with a backslash instead, it is different:

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


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

Neither. use ltrim()

http://www.php.net/ltrim

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