highlighting search terms results

I've seen previous threads but I still need help in highlighting
search terms like google does on their search result page.

I know I need, ob_start();
Then I process to highlight the search term hits, then I flush the
buffer to render the page.

I'm comfortable with PHP coding but what I need is simple step by step
help, with a simple search form example.
The explanations I see are either way to lofty or too small a piece of
the "puzzle".

Thanks,
Lee G.

leegold2 wrote:
>

Do not multi-post! Thread already started in comp.lang.php


JW

If your target string is $str and your search terms are in the array $Terms:

<?php

// create replacement HTML strings
foreach ($Terms as $Term)
{
$Reps[] = "<B>" . $Term . "</B>";
}
// perform replacements
$strOut = str_ireplace($Terms, $Reps, $str);

?>

Replace the <B></B> tags with whatever HTML highlighting you want.
I can't see any reason why you'd specifically need to use output buffering
with ob_start().

Hope this helps.
Oli