PHP Send a mail as UTF-8

To send a mail from PHP encoded as UTF-8 is fairly easy to do by modifying the headers.

//Sender with special chars (UTF-8) encoded
mail('', '=?UTF-8?B?'.base64_encode($subjectString).'?=', $messageString, "MIME-Version: 1.0\r\nContent-type: text/plain; charset=UTF-8\r\n");
//Sender not UTF-8 encoded
mail('', '', $messageString, "MIME-Version: 1.0\r\nContent-type: text/plain; charset=UTF-8\r\n");

Magento: Send åäö (and other international characters) to DIBS

If your store uses DIBS to manage payments, then the risk is that you have to worry about characters like åäö.

What we had to do is to make the form post the data as ISO-8859-1.
We did this by adding accept-charset=”iso-8859-1″ to the forms that we send to DIBS.

In “/app/design/frontend/default/blank/template/dibs/standard/redirect_paymentwindow.phtml”

<form action="" method="post" name="dibs" id="dibs" accept-charset="iso-8859-1">

Once we had done this then the order details were shown correctly on the DIBS page (yes, the Chinese chars are just a test, I have no idea what it might say)
Details on DIBS including åäö

Linux: Converting a file encoded in ISO-8859-1 to UTF-8

If you have a file that is saves as ISO-8859-1 (or ISO-LATIN-1 if you like to call it that) and wish to convert it to UTF-8 you can use:

 iconv --from-code=ISO-8859-1 --to-code=UTF-8 ./oldfile.htm > ./newfile.html

This will create a new file with the converted encoding.

iconv can of of course convert to and from several other charsets. To see a list of all the encodings that iconv can work with use:

 iconv -l

If you wish to massconvert files find can be used with exec

 find . -name "*.txt" -exec iconv -f ISO-8859-1 -t UTF-8 {} -o {}.utf8 \;

Apache2 changing charset using .htaccess

If you do not wish to change character encoding for the entire server, but only one site (or only one directory) then this is possible to do using .htaccess.

AddDefaultCharset UTF-8

If you only wish to do this to php or htm files (and not all files)

<FilesMatch "\.(htm|php)$">
AddDefaultCharset UTF-8

If you wish to modify the mime-type as well as the encoding (on html files in this example)

AddType 'text/html; charset=UTF-8' html