I dont think using all these regular expressions is a very efficient way to do so. As i previously pointed out there are many users who had a similar problem, which can be viewed at: http://it.php.net/manual/en/function.strtr.php One of my favourites is what derernst at gmx dot ch used. derernst at gmx dot ch wrote on 20-Sep-2005 07:29 This works for me to remove accents for some characters of Latin-1, Latin-2 and Turkish in a UTF-8 environment, where the htmlentities-based solutions fail: <?php > function remove_accents($string, $german=false) { // Single letters $single_fr = explode(" ", "� � � � � � Ą Ă � Ć Č Ď Đ � � � � � Ę Ě Ğ � � � � İ Ł Ľ Ĺ � Ń Ň � � � � � � Ő Ŕ Ř � Ś Ş Ť Ţ � � � � Ů Ű � � Ź Ż � � � � � � ą ă � ć č ď đ � � � � ę ě ğ � � � � ı ł ľ ĺ � ń ň � � � � � � � ő ŕ ř ś � ş ť ţ � � � � ů ű � � � ź ż"); $single_to = explode(" ", "A A A A A A A A C C C D D D E E E E E E G I I I I I L L L N N N O O O O O O O R R S S S T T U U U U U U Y Z Z Z a a a a a a a a c c c d d e e e e e e g i i i i i l l l n n n o o o o o o o o r r s s s t t u u u u u u y y z z z"); $single = array(); for ($i=0; $i<count($single_fr); $i++) { $single[$single_fr[$i]] = $single_to[$i]; } // Ligatures $ligatures = array("�"=>"Ae", "�"=>"ae", "�"=>"Oe", "�"=>"oe", "�"=>"ss"); // German umlauts $umlauts = array("�"=>"Ae", "�"=>"ae", "�"=>"Oe", "�"=>"oe", "�"=>"Ue", "�"=>"ue"); // Replace $replacements = array_merge($single, $ligatures); if ($german) $replacements = array_merge($replacements, $umlauts); $string = strtr($string, $replacements); return $string; } ?> I would change this function a bit ... <?php //echo rawurlencode("áàéèíìóòúùÁÀÉÈÍÌÓÒÚÙ"); // RFC 1738 codes; NOTE: One might use UTF-8 as this documents encoding function remove_accents($string) { $string = rawurlencode($string); $replacements = array( '%C3%A1' => 'a', '%C3%A0' => 'a', '%C3%A9' => 'e', '%C3%A8' => 'e', '%C3%AD' => 'i', '%C3%AC' => 'i', '%C3%B3' => 'o', '%C3%B2' => 'o', '%C3%BA' => 'u', '%C3%B9' => 'u', '%C3%81' => 'A', '%C3%80' => 'A', '%C3%89' => 'E', '%C3%88' => 'E', '%C3%8D' => 'I', '%C3%8C' => 'I', '%C3%93' => 'O', '%C3%92' => 'O', '%C3%9A' => 'U', '%C3%99' => 'U' ); return strtr($string, $replacements); } //echo remove_accents("CÀfé"); // I know it's not spelled right echo remove_accents("áàéèíìóòúùÁÀÉÈÍÌÓÒÚÙ"); //OUTPUT (again: i used UTF-8 for document): aaeeiioouuAAEEIIOOUU ?> Ciao Yeti On Mon, Jul 14, 2008 at 8:20 PM, Andrew Ballard <aballard@xxxxxxxxx> wrote: > On Mon, Jul 14, 2008 at 1:35 PM, Giulio Mastrosanti > <giulio@xxxxxxxxxxxxx> wrote: > >> > > > > 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? > > This page explains them both. > http://us.php.net/manual/en/reference.pcre.pattern.modifiers.php > > > preg_replace('/[aàáâãäåǻāăą](?!e)/iu',... whats (?!e) for? -- every > > occurence of aàáâãäåǻāăą NOT followed by e? > > Yes. It matches any character based on the latin 'a' that is not > followed by an 'e'. It keeps the pattern from matching the 'a' when it > immediately precedes an 'e' for the character 'ae' for words like > these: > > http://en.wikipedia.org/wiki/List_of_words_that_may_be_spelled_with_a_ligature > (However, that may cause problems with words that have other variants > of 'ae' in them. I'll leave that to you to resolve.) > http://us.php.net/manual/en/regexp.reference.php > > > > > 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 > >> > >> > > > > >
