log4php.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns="http://logging.apache.org/log4php/">

  <appender name="console" class="LoggerAppenderConsole" >
    <layout class="LoggerLayoutPattern">
      <param name="conversionPattern" value="%d{Y-m-d H:i:s.u} %c [%-5p] %m%n" />
    </layout>
  </appender>

  <root>
    <level value="WARN" />
    <appender_ref ref="console" />
  </root>

  <logger name="Test\ConcurrencyMongo\JobQueue">
    <level value="WARN" />
  </logger>

</configuration>