XML

Structure

  
    Alice
    alice@example.com
  

Advantages of XML over JSON

• Attributes (id="1") and element content — two distinct data types
• Namespaces — avoid name conflicts between schemas
• XSD schemas — stricter structural validation
• XSLT — transform XML into HTML/other XML

PHP and XML

$xml = simplexml_load_string($xmlString);
echo $xml->user[0]->name; // Alice

// Or via DOM
$dom = new DOMDocument();
$dom->loadXML($xmlString);
$nodes = $dom->getElementsByTagName('name');