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authorEric Barnes <eric@ericlbarnes.com>2011-11-27 06:30:22 +0100
committerEric Barnes <eric@ericlbarnes.com>2011-11-27 06:30:22 +0100
commit7e66dda705743cbfe1d522ddb73e5694006ec42c (patch)
treec08b63deb28c09ec49d9173280f1ca234debfe50 /user_guide/general/errors.html
parent7eceb03f083643254c7393c6b5ebe539e344a1ba (diff)
parente101593561a10632c1d63180436b19f1d7115046 (diff)
Merge branch 'refs/heads/develop' into feature/unit-tests
Conflicts: user_guide/helpers/number_helper.html
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-<!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>Error Handling : 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 2.0.3</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> &nbsp;&#8250;&nbsp;
-<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
-Error Handling
-</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&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
-</tr>
-</table>
-<!-- END BREADCRUMB -->
-
-<br clear="all" />
-
-
-<!-- START CONTENT -->
-<div id="content">
-
-<h1>Error Handling</h1>
-
-<p>CodeIgniter lets you build error reporting into your applications using the functions described below.
-In addition, it has an error logging class that permits error and debugging messages to be saved as text files.</p>
-
-<p class="important"><strong>Note:</strong> By default, CodeIgniter displays all PHP errors. You might
-wish to change this behavior once your development is complete. You'll find the <dfn>error_reporting()</dfn>
-function located at the top of your main index.php file. Disabling error reporting will NOT prevent log files
-from being written if there are errors.</p>
-
-<p>Unlike most systems in CodeIgniter, the error functions are simple procedural interfaces that are available
-globally throughout the application. This approach permits error messages to get triggered without having to worry
-about class/function scoping.</p>
-
-<p>The following functions let you generate errors:</p>
-
-<h2>show_error('<var>message</var>' [, int <var>$status_code</var>= 500 ] )</h2>
-<p>This function will display the error message supplied to it using the following error template:</p>
-<p><dfn>application/errors/</dfn><kbd>error_general.php</kbd></p>
-<p>The optional parameter $status_code determines what HTTP status code should be sent with the error.</p>
-
-<h2>show_404('<var>page</var>' [, '<var>log_error</var>'])</h2>
-<p>This function will display the 404 error message supplied to it using the following error template:</p>
-<p><dfn>application/errors/</dfn><kbd>error_404.php</kbd></p>
-
-<p>The function expects the string passed to it to be the file path to the page that isn't found.
-Note that CodeIgniter automatically shows 404 messages if controllers are not found.</p>
-
-<p>CodeIgniter automatically logs any show_404() calls. Setting the optional second parameter to FALSE will skip logging.</p>
-
-
-<h2>log_message('<var>level</var>', '<samp>message</samp>')</h2>
-
-<p>This function lets you write messages to your log files. You must supply one of three "levels"
-in the first parameter, indicating what type of message it is (debug, error, info), with the message
-itself in the second parameter. Example:</p>
-
-<code>
-if ($some_var == "")<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;log_message('error', 'Some variable did not contain a value.');<br />
-}<br />
-else<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;log_message('debug', 'Some variable was correctly set');<br />
-}<br />
-<br />
-log_message('info', 'The purpose of some variable is to provide some value.');<br />
-</code>
-
-<p>There are three message types:</p>
-
-<ol>
-<li>Error Messages. These are actual errors, such as PHP errors or user errors.</li>
-<li>Debug Messages. These are messages that assist in debugging. For example, if a class has been initialized, you could log this as debugging info.</li>
-<li>Informational Messages. These are the lowest priority messages, simply giving information regarding some process. CodeIgniter doesn't natively generate any info messages but you may want to in your application.</li>
-</ol>
-
-
-<p class="important"><strong>Note:</strong> In order for the log file to actually be written, the
- "logs" folder must be writable. In addition, you must set the "threshold" for logging in <dfn>application/config/config.php</dfn>.
-You might, for example, only want error messages to be logged, and not the other two types.
-If you set it to zero logging will be disabled.</p>
-
-
-
-</div>
-<!-- END CONTENT -->
-
-
-<div id="footer">
-<p>
-Previous Topic:&nbsp;&nbsp;<a href="routing.html">URI Routing</a>
-&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
-<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
-<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
-Next Topic:&nbsp;&nbsp;<a href="caching.html">Page Caching</a>
-</p>
-<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 - 2011 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
-</div>
-
-</body>
-</html> \ No newline at end of file