Debug is always on even though JOOMLA_DEBUG is false

[raeldc]

Problem:

Even when the environment variable JOOMLA_DEBUG is set to "false", the debug is still still turned on.

Diagnosis:

Getting JOOMLA_CACHE and JOOMLA_DEBUG from the environment returns a string, so if the configuration is set based on the value like "false" or "0", it will always be equivalent to true.

Solution:

Instead of setting the value as "false" or "true", it should be set to "0" or "1". Then the value should be converted into boolean through type casting.