This method allows to retrieve the version of the Zabbix API.
(array) The method accepts an empty array.
This method is available to unauthenticated users and should be called without the
auth parameter in the JSON-RPC request. Starting from Zabbix 2.4 the method will return an error if the
auth parameter is given.
(string) Returns the version of the Zabbix API.
Starting from Zabbix 2.0.4 the version of the API matches the version of Zabbix. In earlier 2.0 releases the method will always return 1.4.
Retrieve the version of the Zabbix API.
CAPIInfo::version() in frontends/php/api/classes/CAPIInfo.php.