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diff --git a/user_guide/general/environments.html b/user_guide/general/environments.html new file mode 100644 index 000000000..690c14c2c --- /dev/null +++ b/user_guide/general/environments.html @@ -0,0 +1,126 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<head> + +<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> +<title>Creating Libraries : CodeIgniter User Guide</title> + +<style type='text/css' media='all'>@import url('../userguide.css');</style> +<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> + +<script type="text/javascript" src="../nav/nav.js"></script> +<script type="text/javascript" src="../nav/prototype.lite.js"></script> +<script type="text/javascript" src="../nav/moo.fx.js"></script> +<script type="text/javascript" src="../nav/user_guide_menu.js"></script> + +<meta http-equiv='expires' content='-1' /> +<meta http-equiv= 'pragma' content='no-cache' /> +<meta name='robots' content='all' /> +<meta name='author' content='ExpressionEngine Dev Team' /> +<meta name='description' content='CodeIgniter User Guide' /> + +</head> +<body> + +<!-- START NAVIGATION --> +<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> +<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> +<div id="masthead"> +<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> +<tr> +<td><h1>CodeIgniter User Guide Version 2.0.0</h1></td> +<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> +</tr> +</table> +</div> +<!-- END NAVIGATION --> + + +<!-- START BREADCRUMB --> +<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> +<tr> +<td id="breadcrumb"> +<a href="http://codeigniter.com/">CodeIgniter Home</a> › +<a href="../index.html">User Guide Home</a> › +Creating Libraries +</td> +<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> +</tr> +</table> +<!-- END BREADCRUMB --> + +<br clear="all" /> + + +<!-- START CONTENT --> +<div id="content"> + +<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> + +</div> +<!-- END CONTENT --> + + +<div id="footer"> +<p> +Previous Topic: <a href="libraries.html">Using CodeIgniter Libraries</a> + · +<a href="#top">Top of Page</a> · +<a href="../index.html">User Guide Home</a> · +Next Topic: <a href="drivers.html">Using CodeIgniter Drivers</a> +</p> +<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2011 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> +</div> + +</body> +</html>
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