> On 25 Feb 2001 10:34:27 -0800, Jeff Oien <[EMAIL PROTECTED]> wrote:
> >I would like to get rid of \n characters unless there
> >are two or more in a row. So for example if there
>
> The Perl-compatible regular expressions support lookahead and look behind:
>
> $str = 'abcdefabcaadd';
> echo "$str\n";
> $str = preg_replace("/(?<!a)a(?!a)/", "-", $str);
> echo "$str\n";
>
> will display this:
> abcdefabcaadd
> -bcdef-bcaadd
Man, that went right over my head. Is there a description of
how this works anywhere? Thanks for help in any case.
Jeff Oien
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