Welcome to the Cookbook

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While CakePHP core Configure Class settings can really help you see what's happening under the hood, there are certain times that you'll need to log data to the disk in order to find out what's going on. In a world that is becoming more dependent on technologies like SOAP and AJAX, debugging can be rather difficult.

Logging can also be a way to find out what's been going on in your application over time. What search terms are being used? What sorts of errors are my users being shown? How often is a particular query being executed?

Logging data in CakePHP is easy - the log() function is a part of the Object class, which is the common ancestor for almost all CakePHP classes. If the context is a CakePHP class (Model, Controller, Component... almost anything), you can log your data.