Re: comparing two texts
| From: | Robert Cummings | Date: | Sun, 19 Jun 2005 15:33:11 +0000 |
| Subject: | Re: comparing two texts | ||
| References: | 1 2 3 4 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-217193@lists.php.net to get a copy of this message | ||
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.
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