<!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>Running via the CLI : 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 2.2.0</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> › Running via the CLI </td> <td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="ellislab.com/codeigniter/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>Running via the CLI</h1> <p> 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). </p> <ul> <li><a href="#what">What is the CLI?</a></li> <li><a href="#why">Why use this method?</a></li> <li><a href="#how">How does it work?</a></li> </ul> <a name="what"></a> <h2>What is the CLI?</h2> <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> <a name="why"></a> <h2>Why run via the command-line?</h2> <p> There are many reasons for running CodeIgniter from the command-line, but they are not always obvious.</p> <ul> <li>Run your cron-jobs without needing to use wget or curl</li> <li>Make your cron-jobs inaccessible from being loaded in the URL by checking for <kbd>$this->input->is_cli_request()</kbd></li> <li>Make interactive "tasks" that can do things like set permissions, prune cache folders, run backups, etc.</li> <li>Integrate with other applications in other languages. For example, a random C++ script could call one command and run code in your models!</li> </ul> <a name="how"></a> <h2>Let's try it: Hello World!</h2> <p>Let's create a simple controller so you can see it in action. Using your text editor, create a file called <dfn>tools.php</dfn>, and put the following code in it:</p> <textarea class="textarea" style="width:100%" cols="50" rows="10"> <?php class Tools extends CI_Controller { public function message($to = 'World') { echo "Hello {$to}!".PHP_EOL; } } ?> </textarea> <p>Then save the file to your <dfn>application/controllers/</dfn> folder.</p> <p>Now normally you would visit the your site using a URL similar to this:</p> <code>example.com/index.php/<var>tools</var>/<var>message</var>/<var>to</var></code> <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> <blockquote> $ cd /path/to/project;<br/> $ php index.php tools message </blockquote> <p>If you did it right, you should see <samp>Hello World!</samp>.</p> <blockquote> $ php index.php tools message "John Smith" </blockquote> <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> <h2>That's it!</h2> <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> </div> <!-- END CONTENT --> <div id="footer"> <p> Previous Topic: <a href="urls.html">CodeIgniter URLs</a> · <a href="#top">Top of Page</a> · <a href="../index.html">User Guide Home</a> · Next Topic: <a href="reserved_names.html">Reserved Names</a></p> <p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2014 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> </div> </body> </html>