PHP array转SimpleXML用法及代码示例

<?php
// Code to convert php array to xml document
  
// Define a function that converts array to xml.
function arrayToXml($array, $rootElement = null, $xml = null) {
    $_xml = $xml;
      
    // If there is no Root Element then insert root
    if ($_xml === null) {
        $_xml = new SimpleXMLElement($rootElement !== null ? $rootElement :'<root/>');
    }
      
    // Visit all key value pair
    foreach ($array as $k => $v) {
          
        // If there is nested array then
        if (is_array($v)) { 
              
            // Call function for nested array
            arrayToXml($v, $k, $_xml->addChild($k));
            }
              
        else {
              
            // Simply add child element. 
            $_xml->addChild($k, $v);
        }
    }
      
    return $_xml->asXML();
}
  
// Creating an array for demo
$my_array = array (
'name' => 'GFG',
'subject' => 'CS',
  
    // Creating nested array.
    'contact_info' => array (
    'city' => 'Noida',
    'state' => 'UP',
    'email' => 'feedback@geeksforgeeks.org'
    ),
);
  
// Calling arrayToxml Function and printing the result
echo arrayToXml($my_array);
?>

<?php
// Code to convert php array to xml document
  
// Creating an array
$my_array = array (
    'a' => 'x',
    'b' => 'y',
      
    // creating nested array
    'another_array' => array (
        'c' => 'z',
    ),
);
  
// This function create a xml object with element root.
$xml = new SimpleXMLElement('<root/>');
  
// This function resursively added element
// of array to xml document
array_walk_recursive($my_array, array ($xml, 'addChild'));
  
// This function prints xml document.
print $xml->asXML();
?>