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| -rw-r--r-- | user_guide/libraries/database/fields.html | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/user_guide/libraries/database/fields.html b/user_guide/libraries/database/fields.html new file mode 100644 index 000000000..dd2def9a3 --- /dev/null +++ b/user_guide/libraries/database/fields.html @@ -0,0 +1,144 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html>
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+<title>Code Igniter User Guide</title>
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+<div id="masthead">
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td><h1>Code Igniter User Guide Version 1.4.0</h1></td>
+<td id="breadcrumb_right"><a href="../../toc.html">Full Table of Contents</a></td>
+</tr>
+</table>
+</div>
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+<a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
+<a href="../../index.html">User Guide Home</a> ›
+<a href="index.html">Database Library</a> ›
+Field Names
+</td>
+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="www.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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+<!-- START CONTENT -->
+<div id="content">
+
+
+<h1>Field Data</h1>
+
+
+<h2>Retrieving Field Names</h2>
+<p>Sometimes it's helpful to gather the field names.</p>
+
+<h2>$this->db->field_names();</h2>
+<p>Returns an array containing the field names. You must supply the table name to the function:</p>
+
+<code>
+$fields = $this->db->field_names('table_name');<br /><br />
+
+foreach ($fields as $field)<br />
+{<br />
+ echo $field;<br />
+}
+</code>
+
+
+
+<h2>Retrieving Field MetaData</h2>
+<p>Sometimes it's helpful to gather the field names or other metadata, like the column type, max length, etc.</p>
+
+<h2>$this->db->field_data();</h2>
+<p>Returns an array of objects containing field information.</p>
+
+<p class="important">Note: Not all databases provide meta-data.</p>
+
+<p>Usage example:</p>
+
+<code>
+$fields = $this->db->field_data('table_name');<br /><br />
+
+foreach ($fields as $field)<br />
+{<br />
+ echo $field->name;<br />
+ echo $field->type;<br />
+ echo $field->max_length;<br />
+ echo $field->primary_key;<br />
+}
+</code>
+
+<p>If you have run a query already you can use the result oject instead of supplying the table name:</p>
+
+<code>
+$query = $this->db->query("YOUR QUERY");<br />
+$fields = $query->field_data();
+</code>
+
+
+<p>The following data is available from this function if supported by your database:</p>
+
+<ul>
+<li>name - column name</li>
+<li>max_length - maximum length of the column</li>
+<li>primary_key - 1 if the column is a primary key</li>
+<li>type - the type of the column</li>
+</ul>
+
+
+
+
+
+</div>
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+<p>
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