Zend Server Monitoring is an alerting and collection mechanism for early detection of PHP script problems. The Zend Monitor component integrates into the PHP runtime environment and watches for various events such as errors, failing functions, slow scripts, database errors, etc. When an event occurs, the Zend Monitor collects and reports all the relevant debugging information. This information can then be used to perform root cause analysis.
The events generated by the Zend Monitor are governed by rules called Event Rules, that are displayed on the Applications | Event Rules page. These rules define the nature of an event and the parameters for capturing event-related information in an application. Events are only created when the monitor component is running.
By default, Zend Server includes a group of pre-defined rules called Global Rules. You can add, delete and configure event rules to best suit your production and development environment.
Zend Monitor is disabled when running PHP in CLI mode.