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Re: finding newlines [message #183934 is a reply to message #183933]

Tue, 26 November 2013 18:46

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Denis McMahon wrote:

> On Mon, 25 Nov 2013 20:11:40 +0000, Denis McMahon wrote:
>> $lines=explode("\n",preg_replace("/[\r\n]+/","\n",$progressNote));
>
> or of course:
>
> $lines=preg_split("/[\r\n]+/",$progressNote);

Now that I told you. However, “of course” *that* is questionable: within
double-quotes, “\r” and “\n” are expanded as *string* escape sequences,
before preg_split() sees them. When in doubt, use either single-quotes or
double-quotes with double-backslash.

I prefer to use double-backslash also with single-quotes in case someone
decides in the future to support more escape sequences. The resulting code
style also is more consistent because with trailing backslash you *must* use
double-backslash unless you want to escape the string delimiter: '\' is
likely to become a syntax error (unterminated string literal); '\\' is not.

PointedEars
--
Danny Goodman's books are out of date and teach practices that are
positively harmful for cross-browser scripting.
-- Richard Cornford, cljs, <cife6q$253$1$8300dec7(at)news(dot)demon(dot)co(dot)uk> (2004)

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[Message index]

		finding newlines By: bill on Mon, 25 November 2013 16:12
		Re: finding newlines By: Christoph Michael Bec on Mon, 25 November 2013 16:32
		Re: finding newlines By: bill on Tue, 26 November 2013 14:36
		Re: finding newlines By: Richard Yates on Mon, 25 November 2013 16:34
		Re: finding newlines By: Denis McMahon on Mon, 25 November 2013 20:11
		Re: finding newlines By: Thomas 'PointedEars' on Mon, 25 November 2013 21:23
		Re: finding newlines By: Denis McMahon on Tue, 26 November 2013 18:05
		Re: finding newlines By: Thomas 'PointedEars' on Tue, 26 November 2013 18:46
		Re: finding newlines By: somewhere on Sat, 30 November 2013 16:50
		Re: finding newlines By: Thomas 'PointedEars' on Sun, 01 December 2013 16:11
		Re: finding newlines By: Thomas 'PointedEars' on Mon, 25 November 2013 21:18
		Re: finding newlines By: Jerry Stuckle on Mon, 25 November 2013 21:36
		Re: finding newlines By: bill on Wed, 27 November 2013 10:11
		Re: finding newlines By: Thomas 'PointedEars' on Wed, 27 November 2013 15:56
		Re: finding newlines By: bill on Thu, 28 November 2013 16:42
		Re: finding newlines By: Thomas 'PointedEars' on Thu, 28 November 2013 19:20
		Re: finding newlines By: Denis McMahon on Fri, 29 November 2013 00:57
		Re: finding newlines By: Jerry Stuckle on Wed, 27 November 2013 16:47
		Re: finding newlines By: bill on Thu, 28 November 2013 16:09

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