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Re: too many matches regex

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cate <catebekensail@yahoo.com> wrote:

> $s = '1 2 20 - 31 55 56 77 - 88 97 - 99';
> 
> $patRange = '/((\d+) *- *(\d+))/';

Remove the outermost parentheses. See below.

> $matches = array();
> preg_match_all($patRange, $s, $matches);
> 
> I expected to see an array with 3 matches for each of the there
> number "ranges" found in the
> string $s (20 - 31, 20 and 31)....  I see 4.  Why?  Need some
> insight from a jones.  I don't understand what I'm seeing.
> 
> Thank you.

In the matches returned, you have to account for the overall match 
against the pattern itself. In this case, the outermost subpattern 
is superfluous, since it yields the same result as the overall 
match.

<snip print_r() output of the matches>

-- 
Curtis Dyer
<?$x='<?$x=%c%s%c;printf($x,39,$x,39);?>';printf($x,39,$x,39);?>

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too many matches regex cate <catebekensail@yahoo.com> - 2012-01-15 21:33 -0800
  Re: too many matches regex Michael Fesser <netizen@gmx.de> - 2012-01-16 09:08 +0100
  Re: too many matches regex Curtis Dyer <dyer85@gmail.com> - 2012-01-16 08:30 +0000

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