diff options
| author | Joël Cox <joel@joelcox.nl> | 2011-10-09 18:39:39 +0200 |
|---|---|---|
| committer | Joël Cox <joel@joelcox.nl> | 2011-10-09 18:39:39 +0200 |
| commit | f4fb1db458fab52d0493ead52c9ea7e01206eaa7 (patch) | |
| tree | c549600f342f4d3f0df75a2f2f7c265be0f1cc72 /user_guide/database/examples.html | |
| parent | c4dd200c1155a118afa32cd91d9bd67bc243f83a (diff) | |
Moved tutorial to new user guide directory.
Diffstat (limited to 'user_guide/database/examples.html')
| -rw-r--r-- | user_guide/database/examples.html | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/user_guide/database/examples.html b/user_guide/database/examples.html deleted file mode 100644 index 1bdecb79e..000000000 --- a/user_guide/database/examples.html +++ /dev/null @@ -1,217 +0,0 @@ -<!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>Database Quick Start : 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> › -<a href="../index.html">User Guide Home</a> › -<a href="index.html">Database Library</a> › -Database Example Code -</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>Database Quick Start: Example Code</h1> - -<p>The following page contains example code showing how the database class is used. For complete details please -read the individual pages describing each function.</p> - - -<h2>Initializing the Database Class</h2> - -<p>The following code loads and initializes the database class based on your <a href="configuration.html">configuration</a> settings:</p> - -<code>$this->load->database();</code> - -<p>Once loaded the class is ready to be used as described below.</p> - -<p>Note: If all your pages require database access you can connect automatically. See the <a href="connecting.html">connecting</a> page for details.</p> - - -<h2>Standard Query With Multiple Results (Object Version)</h2> - -<code>$query = $this->db->query('SELECT name, title, email FROM my_table');<br /> -<br /> -foreach ($query->result() as $row)<br /> -{<br /> - echo $row->title;<br /> - echo $row->name;<br /> - echo $row->email;<br /> -}<br /> -<br /> -echo 'Total Results: ' . $query->num_rows(); -</code> - -<p>The above <dfn>result()</dfn> function returns an array of <strong>objects</strong>. Example: $row->title</p> - - -<h2>Standard Query With Multiple Results (Array Version)</h2> - -<code>$query = $this->db->query('SELECT name, title, email FROM my_table');<br /> -<br /> -foreach ($query->result_array() as $row)<br /> -{<br /> - echo $row['title'];<br /> - echo $row['name'];<br /> - echo $row['email'];<br /> -}</code> - -<p>The above <dfn>result_array()</dfn> function returns an array of standard array indexes. Example: $row['title']</p> - - -<h2>Testing for Results</h2> - -<p>If you run queries that might <strong>not</strong> produce a result, you are encouraged to test for a result first -using the <dfn>num_rows()</dfn> function:</p> - -<code> -$query = $this->db->query("YOUR QUERY");<br /> -<br /> -if ($query->num_rows() > 0)<br /> -{<br /> - foreach ($query->result() as $row)<br /> - {<br /> - echo $row->title;<br /> - echo $row->name;<br /> - echo $row->body;<br /> - }<br /> -} -</code> - - - - -<h2>Standard Query With Single Result</h2> - -<code>$query = $this->db->query('SELECT name FROM my_table LIMIT 1');<br /> -<br /> -$row = $query->row();<br /> -echo $row->name;<br /> -</code> - -<p>The above <dfn>row()</dfn> function returns an <strong>object</strong>. Example: $row->name</p> - - -<h2>Standard Query With Single Result (Array version)</h2> - -<code>$query = $this->db->query('SELECT name FROM my_table LIMIT 1');<br /> -<br /> -$row = $query->row_array();<br /> -echo $row['name'];<br /> -</code> - -<p>The above <dfn>row_array()</dfn> function returns an <strong>array</strong>. Example: $row['name']</p> - - -<h2>Standard Insert</h2> - -<code> -$sql = "INSERT INTO mytable (title, name) <br /> - VALUES (".$this->db->escape($title).", ".$this->db->escape($name).")";<br /> -<br /> -$this->db->query($sql);<br /> -<br /> -echo $this->db->affected_rows(); -</code> - - - - -<h2>Active Record Query</h2> - -<p>The <a href="active_record.html">Active Record Pattern</a> gives you a simplified means of retrieving data:</p> - -<code> -$query = $this->db->get('table_name');<br /> -<br /> -foreach ($query->result() as $row)<br /> -{<br /> - echo $row->title;<br /> -}</code> - -<p>The above <dfn>get()</dfn> function retrieves all the results from the supplied table. -The <a href="active_record.html">Active Record</a> class contains a full compliment of functions -for working with data.</p> - - -<h2>Active Record Insert</h2> - -<code> -$data = array(<br /> - 'title' => $title,<br /> - 'name' => $name,<br /> - 'date' => $date<br /> - );<br /> -<br /> -$this->db->insert('mytable', $data); -<br /><br /> -// Produces: INSERT INTO mytable (title, name, date) VALUES ('{$title}', '{$name}', '{$date}')</code> - - - - -</div> -<!-- END CONTENT --> - - -<div id="footer"> -<p> -Previous Topic: <a href="index.html">Database Class</a> - · -<a href="#top">Top of Page</a> · -<a href="../index.html">User Guide Home</a> · -Next Topic: <a href="configuration.html">Database Configuration</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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