Formatters | Zend_Log Programmer's Reference Guide | Using the Factory to Create a Log
# Filters A Filter object blocks a message from being written to the log. # Filtering for All Writers To filter before all writers, you can add any number of Filters to a Log object using the addFilter() method: $logger = new Zend_Log(); $writer = new Zend_Log_Writer_Stream('php://output'); $logger->addWriter($writer); $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $logger->addFilter($filter); // blocked $logger->info('Informational message'); // logged $logger->emerg('Emergency message'); When you add one or more Filters to the Log object, the message must pass through all of the Filters before any Writers receives it. # Filtering for a Writer Instance To filter only on a specific Writer instance, use the addFilter() method of that Writer: $logger = new Zend_Log(); $writer1 = new Zend_Log_Writer_Stream('/path/to/first/logfile'); $logger->addWriter($writer1); $writer2 = new Zend_Log_Writer_Stream('/path/to/second/logfile'); $logger->addWriter($writer2); // add a filter only to writer2 $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $writer2->addFilter($filter); // logged to writer1, blocked from writer2 $logger->info('Informational message'); // logged by both writers $logger->emerg('Emergency message');
Formatters | Zend_Log Programmer's Reference Guide | Using the Factory to Create a Log