150 lines
5.6 KiB
HTML
150 lines
5.6 KiB
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">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Running via the CLI : CodeIgniter User Guide</title>
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<style type='text/css' media='all'>@import url('../userguide.css');</style>
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<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
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<script type="text/javascript" src="../nav/nav.js"></script>
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<script type="text/javascript" src="../nav/prototype.lite.js"></script>
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<meta http-equiv= 'pragma' content='no-cache' />
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<meta name='robots' content='all' />
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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</head>
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<body>
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<!-- START NAVIGATION -->
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<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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<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>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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</tr>
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</table>
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</div>
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<!-- END NAVIGATION -->
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<!-- START BREADCRUMB -->
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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Running via the CLI
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</td>
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<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>
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</tr>
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</table>
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<!-- END BREADCRUMB -->
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<br clear="all" />
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<!-- START CONTENT -->
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<div id="content">
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<h1>Running via the CLI</h1>
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<p>
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As well as calling an applications <a href="./controllers.html">Controllers</a> via the URL in a browser they can also be loaded via the command-line interface (CLI).
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</p>
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<ul>
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<li><a href="#what">What is the CLI?</a></li>
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<li><a href="#why">Why use this method?</a></li>
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<li><a href="#how">How does it work?</a></li>
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</ul>
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<a name="what"></a>
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<h2>What is the CLI?</h2>
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<p><dfn>The command-line interface is a text-based method of interacting with computers.</dfn> For more information, check the <a href="http://en.wikipedia.org/wiki/Command-line_interface">Wikipedia article</a>.</p>
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<a name="why"></a>
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<h2>Why run via the command-line?</h2>
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<p>
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There are many reasons for running CodeIgniter from the command-line, but they are not always obvious.</p>
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<ul>
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<li>Run your cron-jobs without needing to use wget or curl</li>
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<li>Make your cron-jobs inaccessible from being loaded in the URL by checking for <kbd>$this->input->is_cli_request()</kbd></li>
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<li>Make interactive "tasks" that can do things like set permissions, prune cache folders, run backups, etc.</li>
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<li>Integrate with other applications in other languages. For example, a random C++ script could call one command and run code in your models!</li>
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</ul>
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<a name="how"></a>
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<h2>Let's try it: Hello World!</h2>
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<p>Let's create a simple controller so you can see it in action. Using your text editor, create a file called <dfn>tools.php</dfn>, and put the following code in it:</p>
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<textarea class="textarea" style="width:100%" cols="50" rows="10">
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<?php
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class Tools extends CI_Controller {
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public function message($to = 'World')
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{
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echo "Hello {$to}!".PHP_EOL;
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}
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}
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?>
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</textarea>
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<p>Then save the file to your <dfn>application/controllers/</dfn> folder.</p>
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<p>Now normally you would visit the your site using a URL similar to this:</p>
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<code>example.com/index.php/<var>tools</var>/<var>message</var>/<var>to</var></code>
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<p>Instead, we are going to open Terminal in Mac/Lunix or go to Run > "cmd" in Windows and navigate to our CodeIgniter project.</p>
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<blockquote>
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$ cd /path/to/project;<br/>
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$ php index.php tools message
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</blockquote>
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<p>If you did it right, you should see <samp>Hello World!</samp>.</p>
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<blockquote>
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$ php index.php tools message "John Smith"
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</blockquote>
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<p>Here we are passing it a argument in the same way that URL parameters work. "John Smith" is passed as a argument and output is: <samp>Hello John Smith!</samp>.</p>
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<h2>That's it!</h2>
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<p>That, in a nutshell, is all there is to know about controllers on the command line. Remember that this is just a normal controller, so routing and _remap works fine.</p>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="urls.html">CodeIgniter URLs</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="reserved_names.html">Reserved Names</a></p>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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</div>
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</body>
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</html>
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