Zend_Log_Writer_ZendMonitor allows you to log events via Zend
Server's Monitor API. This allows you to aggregate log messages for your
entire application environment in a single location. Internally, it simply uses the
monitor_custom_event() function from the Zend Monitor
One particularly useful feature of the Monitor API is that it allows you to specify arbitrary custom information alongside the log message. For instance, if you wish to log an exception, you can log not just the exception message, but pass the entire exception object to the function, and then inspect the object within the Zend Server event monitor.
Zend Monitor must be installed and enabled
In order to use this log writer, Zend Monitor must be both installed and enabled.
However, it is designed such that if Zend Monitor is not detected, it will simply act as
ZendMonitor log writer is trivial:
$writer = new Zend_Log_Writer_ZendMonitor();
$log = new Zend_Log($writer);
Then, simply log messages as usual:
$log->info('This is a message');
If you want to specify additional information to log with the event, pass that information in a second parameter:
$log->info('Exception occurred', $e);
The second parameter may be a scalar, object, or array; if you need to pass multiple pieces of information, the best way to do so is to pass an associative array.
$log->info('Exception occurred', array(
'request' => $request,
'exception' => $e,
Within Zend Server, your event is logged as a "custom event". From the "Monitor" tab, select the "Events" sub-item, and then filter on "Custom" to see custom events.
Events in Zend Server's Monitor dashboard
In this screenshot, the first two events listed are custom events logged via the
ZendMonitor log writer. You may then click on an event to view all
information related to it.
Event detail in Zend Server's Monitor
Clicking on the "Custom" sub tab will detail any extra information you logged by passing the
second argument to the logging method. This information will be logged as the
info subkey; you can see that the request object was logged in this
Integration with Zend_Application
By default, the zf.sh and zf.bat commands add
configuration for the
log resource, which includes configuration for the
ZendMonitor log writer. Additionally, the
ErrorController uses the configured logger to log application
exceptions -- providing you with Zend Monitor event integration by default.
As noted previously, if the Monitor API is not detected in your
PHP installation, the logger will simply act as a