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-<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
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-Handling Multiple Environments
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-<h1>Handling Multiple Environments</h1>
-
-<p>
- Developers often desire different system behavior depending on whether
- an application is running in a development or production
- environment. For example, verbose error output is something that would
- be useful while developing an application, but it may also pose a security issue when "live".
-</p>
-
-<h2>The ENVIRONMENT Constant</h2>
-
-<p>
- By default, CodeIgniter comes with the environment constant set to
- '<kbd>development</kbd>'. At the top of index.php, you will see:
-</p>
-
-<code>
-define('<var>ENVIRONMENT</var>', '<var>development</var>');
-</code>
-
-<p>
- In addition to affecting some basic framework behavior (see the next section),
- you may use this constant in your own development to differentiate
- between which environment you are running in.
-</p>
-
-<h2>Effects On Default Framework Behavior</h2>
-
-<p>
- There are some places in the CodeIgniter system where the <kbd>ENVIRONMENT</kbd>
- constant is used. This section describes how default framework behavior is
- affected.
-</p>
-
-<h3>Error Reporting</h3>
-
-<p>
- Setting the <kbd>ENVIRONMENT</kbd> constant to a value of '<kbd>development</kbd>' will
- cause all PHP errors to be rendered to the browser when they occur. Conversely,
- setting the constant to '<kbd>production</kbd>' will disable all error output. Disabling
- error reporting in production is a <a href="security.html">good security practice</a>.
-</p>
-
-<h3>Configuration Files</h3>
-
-<p>
- Optionally, you can have CodeIgniter load environment-specific
- configuration files. This may be useful for managing things like differing API keys
- across multiple environments. This is described in more detail in the
- environment section of the <a href="../libraries/config.html#environments">Config Class</a> documentation.
-</p>
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