Google like search results

[lwc]

I want to have Google like search results. That means:
1) Highlighting the searched keywords, but still only presenting the phrases around them and not the entire page.
2) Presenting only the sentences in which the searched keywords are in. And keep in mind those sentences could be:
2)A. At the start of the page.
2)B. At the middle of the page.
2)C. At the end of the page.

Currently, I managed to do just the highlighting, but even that came with a price - it forces upper/lower capitalization based on the search. For example, if you looked for the word "php", every word that is spelled "PHP" would be changed to "php" in order to be highlighted.
Or in PHP language:
[code]$results = str_ireplace($searchword, '<font color=red>' . $searchword . '</font>', $results);[/code]
I had to use str_[b]i[/b]replace because otherwise it's a case sensitive search, which I don't want!

So again, what I want is just like Google would have it: for example, searching for the word "php" would also highlight the word "PHP", but without turning it into "php".

Thanks!

[Nicklas]

use regular expressions like [url=http://www.php.net/preg_replace]preg_replace()[/url]

ex
[code=php:0]<?php

$string = "Highlight everything with php, like, PhP and www.phpfreaks.com";

$searchword = "php";
echo preg_replace("/($searchword)/is", '<span style="color: #ff0000">\\1</span>', $string);

?>[/code]

[lwc]

Please delete this post.

[lwc]

Thanks, worked like a charm and doesn't even require PHP v5 like str_ireplace!

I've added another issue to this topic - can you help out with it too?

[lwc]

Come on, no one knows this? :(

[effigy]

I suppose you could use PREG_OFFSET_CAPTURE, grab the content before (offset - amount) and after ((offset + match_length) + amount) the match, then regex/process the before and afters as needed.