带有“严重”重音的str_replace

Question

I'm developing a web and I want to print some information from DB. I have found the problem that information with "grave" accent it is not possible to convert to upper case.

For example, I have the following information: John Seràn Mollò and I need to convert it to upper case. This should be the result: JOHN SERÀN MOLLÒ

I'm trying the following code:

            $filtre = array("&agrave", "&egrave", "&ograve");
            $modificacions = array("a", "e", "o");
            $phrase = str_replace($filtre, $modificacions, $vols[$i]['crew']);
            var_dump($phrase);
            echo strtoupper($phrase); ?>

In that case, the result should be JOHN SERAN MOLLO (without the accents), but I get this: JOHN SERàN MOLLò.

What I'm doing bad? How can I get JOHN SERAN MOLLO (without accents) or, if it's possible, how can I could get JOHN SERÀN MOLLÒ (accents in upper case).

Answer 1

If your installation has the mbstring extension loaded (most do, in my experience), you should be able to use mb_strtoupper, e.g.

echo mb_strtoupper($phrase);

This will use the default internal encoding by default, so should be all you need, but you may also need to provide a second argument to specify the string encoding.

If the function isn't available, there's a polyfill available here: https://github.com/symfony/polyfill-mbstring