What is \u0026#39;n and how do I decode it?

Question

So I have a string that is in another language, most of it looks great, but parts of it is encoded incorrectly. How do I convert the literal string \u0026#39;n into its unicode(?) equivalent in PHP?

Answer 1

The following PHP function will translate \u0026#39;n into 'n. This is used to communicate with the Google Translate API.

function unescapeUTF8EscapeSeq($str) {
    return preg_replace_callback("/\\\u([0-9a-f]{4})/i",
        create_function('$matches',
            'return html_entity_decode(\'&#x\'.$matches[1].\';\', ENT_QUOTES, \'UTF-8\');'
        ), $str);
}