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Posted by Robert Cummings on 06/19/05 19:45
On Sun, 2005-06-19 at 12:33, M. Sokolewicz wrote:
> Robert Cummings wrote:
> > On Sun, 2005-06-19 at 09:22, M. Sokolewicz wrote:
> >
> >>jenny mathew wrote:
> >>
> >>>>Untested, very crude:
> >>>>
> >>>><?php
> >>>>$maxlen = max(strlen($text1), strlen($text2));
> >>>>for ($i = 0; $i < $maxlen; $i++){
> >>>>if (@$text1[$i] == @$text2[$i]) echo @$text1[$i];
> >>>>else @echo "<font color=red>$text1[$i]|$text2[$i]</font>";
> >>>>}
> >>>>?>
> >>>
> >>> donot you think you program will just bring the server to its foot ,if the
> >>>text message encountered is very large of order of 40 KB or
> >>>larger.is<http://larger.is>there any other efficient method.
> >>>
> >>
> >>40KB isn't large... now, when you're talking about hundreds of MBs of
> >>text, then it gets large :) 40KB, with that method, is nothing...
> >
> >
> > It's a bit of a dirty hack though. If I compare a 2 character text
> > against a 40k text, the error handler will be invoked (39998 * 3) times
> > if $text1 is the 2 byte string. That's extremely inefficient. I don't
> > think I've ever seen error suppression abused so badly to prevent
> > writing an extra line or 2 using isset().
> >
> > Cheers,
> > Rob.
> I agree with what you said fully; however, even though that's the case,
> and it indeed could be written a lot faster and cleaner, it would not
> pose a problem on most systems. That was the point I tried to make ;)
Oh absolutely, 40k is tiny :) Just never seen error suppression used for
such mundane processing. Now if we up it to 2 chars and 5 megs :) With a
custom user space error handler in the background... ugh.
Cheers,
Rob.
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