String Encoding issue - PHP

Question

I need to store the column name from csv file into mysql DB, In PHP i have used to convert the string to utf8_encode format. it does not work for some string,

$name = "Téléphone"
echo utf8_encode($name); // it works

output : Téléphone

$name = "Etat œuvre"
echo utf8_encode($name); // it does not works

output : Etat Å?uvre

For testing:

echo bin2hex($name);
output: 45746174209c75767265

Answer 1

45746174209c75767265

The "œ" in here is 9c , which points to the string being encoded in Windows-1252 . utf8_encode converts from ISO-8859-1 to UTF-8, so you're doing the wrong encoding conversion. The correct one is:

mb_convert_encoding('Etat œuvre', 'UTF-8', 'CP1252')

Answer 2

utf8_encode is not the "right tool" for this task. Try mb_convert_encoding instead.

Example:

function encodeUtf8(string $data): string
{
    if (!mb_check_encoding($data, 'UTF-8')) {
        return mb_convert_encoding($data, 'UTF-8');
    }

    return $data;
}

echo encodeUtf8('Téléphone'); // Téléphone
echo encodeUtf8('Etat œuvre'); // Etat œuvre