XML error at ampersand (&)

Question

I have a php file which prints an xml based on a MySql db.

I get an error every time at exactly the point where there is an & sign.

Here

Answer 1

Switch and regex with using xml escape function.

 function XmlEscape(str) {
    if (!str || str.constructor !== String) {
        return "";
    }

    return str.replace(/[\"&><]/g, function (match) {
        switch (match) {
        case "\"":
            return """;
        case "&":
            return "&";
        case "<":
            return "<";
        case ">":
            return ">";
        }
    });
};