A quick debugging tip for developers. You can write custom messages into Magento’s system log or exception log – helpful for knowing the current variable or object state etc.
How to enable log
Admin > System > Configuration > Developer > Log Settings
Set “Enabled” to “Yes”
Code to write into the log
Mage::log("Hello");
Mage::log("Hello Again");
Where to check?
Your custom message should most probably be in the var/log/system.log file but, in case you do not find it there, you can also check the var/log/exception.log file.
New log messages are found at the bottom of the log file.
Ensure that your log folder and files have enough permissions to write.
The log message will look like this:
2010-04-14T13:40:24+00:00 DEBUG (7): Hello
2010-04-14T13:41:31+00:00 DEBUG (7): Hello Again
