How to combine two XML documents in PHP using SimpleXML?

Question

I have a database row that looks like this.

ID (int):       123
Name (string):  SomeName
Data (string):  <data><foo>one</foo></bar>two</bar></data>

I need to format this data as XML as follows.

<row>
  <id>123</id>
  <name>SomeName</name>
  <data>
    <foo>one</foo>
    <bar>two</bar>
  </data>
<row>

I'm currently using SimpleXML to try to build this, but I'm not sure how to go about pasting existing XML into the new XML document I'm trying to build.

If there are other standard XML builders that ship with PHP, I am also open to using them. String concatenation is not an acceptable answer.

Edit: it looks like SimpleXML will not do what I need. In my opinion, I need suggestions for other XML parsers.

Answer 1

$xml = new SimpleXMLElement('<row></row>');
$xml->addChild('id', /*database ID column*/);
$xml->addChild('name', /*database Name column*/);

$data = new SimpleXMLElement(/*database Data column*/);

$xml->addChild('data');
$xml->data->addChild('foo', $data->foo);
$xml->data->addChild('bar', $data->bar);

. , . , . SimpleXML:)

Answer 2

$xml = '<data><foo>one</foo><bar>two</bar></data>'; // your data field

$row = new SimpleXMLElement('<row></row>'); // new row to inject your database fields into
$data = new SimpleXMLElement($xml); // new object from your xml data field

$row->id = '123'; // your id field
$row->name = 'Somename'; // your name field
$row->data->foo = $data->foo; // your foo record from your xml data field
$row->data->bar = $data->bar; // your bar record from your xml data field

$final_xml = $row->saveXML(); // restructure your xml file/string
echo $final_xml; // <?xml version="1.0"?><row><id>123</id><name>Somename</name><data><foo>one</foo><bar>two</bar></data></row>

, . SimpleXml, , . , vars. A <?xml version="1.0"?> / xml.

, <?xml version="1.0"?>. , :

$final_xml = str_replace("<?xml version=\"1.0\"?>\n",'',$final_xml);

http://www.php.net/manual/en/simplexmlelement.asxml.php SimpleXml xml-/.

Answer 3

/**
* Converts your record to XML.
* 
* @param array/object $record
* @return SimpleXMLElement
*/
function ConvertToXml($record){
    // Objects need to be arrays
    if(is_object($record)){
        $record = get_object_vars($record);
    }

    // We need an array argument
    if(!is_array($record)){
        trigger_error('$record must be an object or an array.', E_USER_WARNING);
        return null;
    }

    // Now we build XML
    ob_start();
    echo '<xml>', PHP_EOL;
    foreach($record as $name => $value){
        if(is_object($value) or is_array($value) or is_resource($value)){
            trigger_error('$record must have only scalar values.', E_USER_WARNING);
            return null;
        }
        if(!is_string($name) or !preg_match('~[a-z_][a-z0-9]*~i', $name)){
            trigger_error('$record must have only XML-tag friendly string keys.', E_USER_WARNING);
            return null;
        }

        // NULL produces an empty node
        if(is_null($value)){
            echo "<{$name} />", PHP_EOL;
            continue;
        }

        // Numerics don't need to be XML encoded
        if(is_integer($value) or is_float($value) or is_bool($value)){
            echo "<{$name}>{$value}</{$name}>", PHP_EOL;
            continue;
        }

        // We must have a string now
        if(!is_string($name)){
            trigger_error('$record must have only scalar values.', E_USER_WARNING);
            return null;
        }

        // Do we have an XML field?
        if(preg_match('~^\s*<.+>\s*$~s', $value)){
            // Test it for real!
            if($xml = @simplexml_load_string("<xml>{$value}</xml>")){
                echo $value, PHP_EOL;
                continue;
            }
        }

        // Now output random strings
        echo "<{$name}>", htmlentities($value, ENT_QUOTES, 'utf-8'), "</{$name}>", PHP_EOL;
    }
    echo '</xml>', PHP_EOL;

    // Store built XML
    $xml = ob_get_clean();

    // Load the built XML
    return @simplexml_load_string($xml);;
}

// Prepare an array
$record = array();
$record['ID'] = 1;
$record['Name'] = 'SomeName';
$record['Data'] = '<data><foo>one</foo><bar>two</bar></data>';
if($xml = ConvertToXml($record)){
    echo $xml->asXML();
}

^ .