converting & to & for XML in PHP

Question

I am building a XML RSS for my page. And running into this error:

error on line 39 at column 46: xmlParseEntityRef: no name

Apparently this is because I cant have & in XML... Which I do in my last field row...

What is the best way to clean all my $row['field']'s in PHP so that &'s turn into &

Answer 1

Use htmlspecialchars to encode just the HTML special characters &, <, >, " and optionally ' (see second parameter $quote_style).

Answer 2

It's called htmlentities() and html_entity_decode()