Re: case and accent - insensitive regular expression?

Brilliant !!! so you replace every occurence of every accent variation with all the accent variations... OK, that's it! only some more doubts ( regex are still an headhache for me... ) preg_replace('/[iìíîïĩīĭįı]/iu',... -- what's the meaning of iu after the match string? preg_replace('/[aàáâãäåǻāăą](?!e)/iu',... whats (?!e) for? -- every occurence of aàáâãäåǻāăą NOT followed by e? Many thanks again for your effort, I'm definitely on the good way

      Giulio

I was intrigued by your example, so I played around with it some more this morning. My own quick web search yielded a lot of results for highlighting search terms, but none that I found did what you're after. (I admit I didn't look very deep.) I was up to something like this before your reply came in. It's still by no means complete. It even handles simple English plurals (words ending in 's' or 'es'), but not variations that require changing the word base (like 'daisy' to 'daisies'). <?php function highlight_search_terms($phrase, $string) { $non_letter_chars = '/[^\pL]/iu'; $words = preg_split($non_letter_chars, $phrase); $search_words = array(); foreach ($words as $word) {

       if (strlen($word) > 2 && !preg_match($non_letter_chars, $word)) {
           $search_words[] = $word;
       }

} $search_words = array_unique($search_words); foreach ($search_words as $word) {

       $search = preg_quote($word);

       /* repeat for each possible accented character */
       $search = preg_replace('/(ae|æ|ǽ)/iu', '(ae|æ|ǽ)', $search);
       $search = preg_replace('/(oe|œ)/iu', '(oe|œ)', $search);
       $search = preg_replace('/[aàáâãäåǻāăą](?!e)/iu',

'[aàáâãäåǻāăą]', $search);

       $search = preg_replace('/[cçćĉċč]/iu', '[cçćĉċč]', $search);
       $search = preg_replace('/[dďđ]/iu', '[dďđ]', $search);
       $search = preg_replace('/(?<![ao])[eèéêëēĕėęě]/iu',

'[eèéêëēĕėęě]', $search);

       $search = preg_replace('/[gĝğġģ]/iu', '[gĝğġģ]', $search);
       $search = preg_replace('/[hĥħ]/iu', '[hĥħ]', $search);
       $search = preg_replace('/[iìíîïĩīĭįı]/iu', '[iìíîïĩīĭįı]', $search);
       $search = preg_replace('/[jĵ]/iu', '[jĵ]', $search);
       $search = preg_replace('/[kķĸ]/iu', '[kķĸ]', $search);
       $search = preg_replace('/[lĺļľŀł]/iu', '[lĺļľŀł]', $search);
       $search = preg_replace('/[nñńņňʼnŋ]/iu', '[nñńņňʼnŋ]', $search);
       $search = preg_replace('/[oòóôõöōŏőǿơ](?!e)/iu',

'[oòóôõöōŏőǿơ]', $search);

       $search = preg_replace('/[rŕŗř]/iu', '[rŕŗř]', $search);
       $search = preg_replace('/[sśŝşš]/iu', '[sśŝşš]', $search);
       $search = preg_replace('/[tţťŧ]/iu', '[tţťŧ]', $search);
       $search = preg_replace('/[uùúûüũūŭůűųǔǖǘǚǜ]/iu',

'[uùúûüũūŭůűųǔǖǘǚǜ]', $search);

       $search = preg_replace('/[wŵ]/iu', '[wŵ]', $search);
       $search = preg_replace('/[yýÿŷ]/iu', '[yýÿŷ]', $search);
       $search = preg_replace('/[zźżž]/iu', '[zźżž]', $search);

       $string = preg_replace('/\b' . $search . '(e?s)?\b/iu', '<span

class="keysearch">$0</span>', $string); } return $string; } ?> I still can't help feeling there must be some better way, though.

well, i think I'm on the good way now, unfortunately I have some other

urgent work and can't try it immediately, but I'll let you know    :)

thank you! Giulio

Andrew