Merge branch 'refs/heads/develop' into feature/unit-tests

Conflicts:
	user_guide/helpers/number_helper.html

1 files changed, 136 insertions, 0 deletions

diff --git a/user_guide_src/source/database/examples.rst b/user_guide_src/source/database/examples.rst
new file mode 100644
index 000000000..d1cd48837
--- /dev/null
+++ b/user_guide_src/source/database/examples.rst
@@ -0,0 +1,136 @@
+##################################
+Database Quick Start: Example Code
+##################################
+
+The following page contains example code showing how the database class
+is used. For complete details please read the individual pages
+describing each function.
+
+Initializing the Database Class
+===============================
+
+The following code loads and initializes the database class based on
+your :doc:`configuration <configuration>` settings::
+
+	$this->load->database();
+
+Once loaded the class is ready to be used as described below.
+
+Note: If all your pages require database access you can connect
+automatically. See the :doc:`connecting <connecting>` page for details.
+
+Standard Query With Multiple Results (Object Version)
+=====================================================
+
+::
+
+	$query = $this->db->query('SELECT name, title, email FROM my_table');
+	
+	foreach ($query->result() as $row)
+	{
+		echo $row->title;
+		echo $row->name;
+		echo $row->email;
+	}
+	
+	echo 'Total Results: ' . $query->num_rows();
+
+The above result() function returns an array of **objects**. Example:
+$row->title
+
+Standard Query With Multiple Results (Array Version)
+====================================================
+
+::
+
+	$query = $this->db->query('SELECT name, title, email FROM my_table');
+	
+	foreach ($query->result_array() as $row)
+	{
+		echo $row['title'];
+		echo $row['name'];
+		echo $row['email'];
+	}
+
+The above result_array() function returns an array of standard array
+indexes. Example: $row['title']
+
+Testing for Results
+===================
+
+If you run queries that might **not** produce a result, you are
+encouraged to test for a result first using the num_rows() function::
+
+	$query = $this->db->query("YOUR QUERY");
+	if ($query->num_rows() > 0)
+	{
+		foreach ($query->result() as $row)
+		{
+			echo $row->title;
+			echo $row->name;
+			echo $row->body;
+		}
+	}
+
+Standard Query With Single Result
+=================================
+
+::
+
+	$query = $this->db->query('SELECT name FROM my_table LIMIT 1'); 
+	$row = $query->row();
+	echo $row->name;
+
+The above row() function returns an **object**. Example: $row->name
+
+Standard Query With Single Result (Array version)
+=================================================
+
+::
+
+	$query = $this->db->query('SELECT name FROM my_table LIMIT 1');
+	$row = $query->row_array();
+	echo $row['name'];
+
+The above row_array() function returns an **array**. Example:
+$row['name']
+
+Standard Insert
+===============
+
+::
+
+	$sql = "INSERT INTO mytable (title, name) VALUES (".$this->db->escape($title).", ".$this->db->escape($name).")";
+	$this->db->query($sql);
+	echo $this->db->affected_rows();
+
+Active Record Query
+===================
+
+The :doc:`Active Record Pattern <active_record>` gives you a simplified
+means of retrieving data::
+
+	$query = $this->db->get('table_name');
+	
+	foreach ($query->result() as $row)
+	{
+		echo $row->title;
+	}
+
+The above get() function retrieves all the results from the supplied
+table. The :doc:`Active Record <active_record>` class contains a full
+compliment of functions for working with data.
+
+Active Record Insert
+====================
+
+::
+
+	$data = array(
+		'title' => $title,
+		'name' => $name,
+		'date' => $date
+	);
+	
+	$this->db->insert('mytable', $data);  // Produces: INSERT INTO mytable (title, name, date) VALUES ('{$title}', '{$name}', '{$date}')
+