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Posted by Rory Browne on 06/08/05 22:37
On 6/8/05, John Nichel <john@kegworks.com> wrote:
> Rory Browne wrote:
> <snip>
> >>Good catch Rory. A regex replace would work better here.
> >>
> >>$search = "body";
> >>$find = "/\b" . $search . "\b/";
> >>preg_replace ( $find, "<b>" . $search . "</b>", $html );
> >
> >
> > I don't think so. If I'm reading your code correctly you still have
> > the same problem, as I outlined above. There is no simple solution to
> > this. It either involves advanced regex(more advanced than my
> > understanding of it), or a proper parser.
> >
> > <?pseudo_code
> >
> > function highlight_html_string($needle, $haystack);
> >
> > $retval = "";
> > $i = 0;
> > while($i < strlen($haystack)){
> > $str = get_text_between_certain_point_and_first_instance_of_<($i);
> > $str = preg_replace(what john said above);
> > $str .= get_tag_text($i);
> > $retval .= $str;
> > $i += strlen($str);
> > }
> >
> > return $retval;
> > ?>
>
> < won't be picked up as a word boundry (\b).
Aparently it will.
[rory@mybox tmp]$ cat /tmp/test.php
<?php
$str = "<html><body>Highlight the body of the text</body></html>";
echo preg_replace("/\bbody\b/", "<b>body</b>", $str);
?>
[rory@mybox tmp]$ php -q /tmp/test.php
<html><<b>body</b>>Highlight the <b>body</b> of the text</<b>body</b>></html>
>
> --
> John C. Nichel
> ÜberGeek
> KegWorks.com
> 716.856.9675
> john@kegworks.com
>
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