highlight multiple keywords in search

Question

i\'m using this code to highlight search keywords:

function highlightWords($string, $word)
 {

        $string = str_replace($word, \"

        

Answer 1

Highlight multiple keywords in search including umlauts

I've used the regex written before and replaced \w with [A-Za-z0-9_äöüÄÖÜ]. As you see I added the umlauts äöüÄÖÜ. I also have removed the \b so it will match any appearance of the search term.

Example

search term:
Su shamp

text:
Sun shiny shampoo

result:
Sun shiny shampoo

---

The code I've used:

private function getSearchTermToBold($text, $words)
{
    preg_match_all('~[A-Za-z0-9_äöüÄÖÜ]+~', $words, $m);
    if (!$m)
        return $text;
    $re = '~(' . implode('|', $m[0]) . ')~i';
    return preg_replace($re, '$0', $text);
}