function hook_xmlrpc_alter in Drupal 7
Alters the definition of XML-RPC methods before they are called.
This hook allows modules to modify the callback definition of declared XML-RPC methods, right before they are invoked by a client. Methods may be added, or existing methods may be altered.
Note that hook_xmlrpc() supports two distinct and incompatible formats to define a callback, so care must be taken when altering other methods.
Parameters
$methods: An asssociative array of method callback definitions, as returned from hook_xmlrpc() implementations.
See also
Related topics
1 function implements hook_xmlrpc_alter()
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
- xmlrpc_test_xmlrpc_alter in modules/simpletest/ tests/ xmlrpc_test.module 
- Implements hook_xmlrpc_alter().
1 invocation of hook_xmlrpc_alter()
- xmlrpc_server in includes/xmlrpcs.inc 
- Invokes XML-RPC methods on this server.
File
- modules/system/ system.api.php, line 2468 
- Hooks provided by Drupal core and the System module.
Code
function hook_xmlrpc_alter(&$methods) {
  // Directly change a simple method.
  $methods['drupal.login'] = 'mymodule_login';
  // Alter complex definitions.
  foreach ($methods as $key => &$method) {
    // Skip simple method definitions.
    if (!is_int($key)) {
      continue;
    }
    // Perform the wanted manipulation.
    if ($method[0] == 'drupal.site.ping') {
      $method[1] = 'mymodule_directory_ping';
    }
  }
}