/**
  * Get storage account key.
  *
  * @command-name GetKey
  * @command-description Get storage account key.
  * @command-parameter-for $subscriptionId Zend_Service_Console_Command_ParameterSource_Argv|Zend_Service_Console_Command_ParameterSource_ConfigFile|Zend_Service_Console_Command_ParameterSource_Env --SubscriptionId|-sid Required. This is the Windows Azure Subscription Id to operate on.
  * @command-parameter-for $certificate Zend_Service_Console_Command_ParameterSource_Argv|Zend_Service_Console_Command_ParameterSource_ConfigFile|Zend_Service_Console_Command_ParameterSource_Env --Certificate|-cert Required. This is the .pem certificate that user has uploaded to Windows Azure subscription as Management Certificate.
  * @command-parameter-for $certificatePassphrase Zend_Service_Console_Command_ParameterSource_Argv|Zend_Service_Console_Command_ParameterSource_ConfigFile|Zend_Service_Console_Command_ParameterSource_Prompt --Passphrase|-p Required. The certificate passphrase. If not specified, a prompt will be displayed.
  * @command-parameter-for $accountName Zend_Service_Console_Command_ParameterSource_Argv|Zend_Service_Console_Command_ParameterSource_ConfigFile|Zend_Service_Console_Command_ParameterSource_Env --AccountName Required. The storage account name to operate on.
  * @command-parameter-for $key Zend_Service_Console_Command_ParameterSource_Argv|Zend_Service_Console_Command_ParameterSource_ConfigFile --Key|-k Optional. Specifies the key to regenerate (primary|secondary). If omitted, primary key is used as the default.
  * @command-example Get primary storage account key for account "phptest":
  * @command-example GetKey -sid:"<your_subscription_id>" -cert:"mycert.pem"
  * @command-example --AccountName:"phptest" -Key:primary
  */
 public function getKeyCommand($subscriptionId, $certificate, $certificatePassphrase, $accountName, $key = 'primary')
 {
     $client = new Zend_Service_WindowsAzure_Management_Client($subscriptionId, $certificate, $certificatePassphrase);
     $result = $client->getStorageAccountKeys($accountName);
     if (strtolower($key) == 'secondary') {
         printf("%s\r\n", $result[1]);
     }
     printf("%s\r\n", $result[0]);
 }