PHP生成的XML源代码很乱[重复]

Question

Possible Duplicate:
format xml string

I'm generating an XML page like so:

            header('Content-Type: text/html');              

            $xmlpage = '<?xml version="1.0" charset="utf-8"?>';

            $xmlpage .= '<conv>';
            $xmlpage .= '<at>6 January 2012 12:00</at>';
            $xmlpage .= '<rate>1.56317</rate>';

            $xmlpage .= '<from>';
            $xmlpage .= '<code>'.$from.'</code>';
            $xmlpage .= '<curr>Pound Sterling</curr>';
            $xmlpage .= '<loc>UK</loc>';
            $xmlpage .= '<amnt>'.$amnt.'</amnt>';
            $xmlpage .= '</from>';

            $xmlpage .= '</conv>';

            echo $xmlpage;

When viewing the page source, it looks terrible:

 <?xml version="1.0" charset="utf-8"?><conv><at>6 January 2012 12:00</at><rate>1.56317</rate><from><code>USD</code><curr>Pound Sterling</curr><loc>UK</loc><amnt>23</amnt></from><to><code>GBP</code><curr>United States Dollar</curr><loc>USA</loc><amnt>14.73</amnt></to></conv>

How can I make this so it's properly formatted and indented?

Answer 1

Add newlines with the or only characters. You'll need to place your strings in double quotes ("") for it to work, so either replace the double-quotes inside the strings with single ones ('), escape the double quotes (\"), add ." " as a linebreak or use HEREDOC.

Building your XML with a XML generator like the built-in SimpleXML will prevent these sort and numerous other types of problems and is usually far easier than building it by hand with strings.