From e97b13635f8985ac88add9659ae6a78e67006b9b Mon Sep 17 00:00:00 2001
From: Derek Jones <derek.jones@ellislab.com>
Date: Thu, 3 Apr 2008 21:23:13 +0000
Subject: replaced isset() with array_key_exists() in row() to allow retrieval
 of individual fields with MySQL NULL values

---
 system/database/DB_result.php | 3 ++-
 user_guide/changelog.html     | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 7d5097911..6461431e2 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -133,7 +133,8 @@ class CI_DB_result {
 				$this->row_data = $this->row_array(0);
 			}
 		
-			if (isset($this->row_data[$n]))
+			// array_key_exists() instead of isset() to allow for MySQL NULL values
+			if (array_key_exists($n, $this->row_data)))
 			{
 				return $this->row_data[$n];
 			}
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 870e21c1d..4e3ca7ced 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -78,6 +78,7 @@ Change Log
 			<li>Modified <kbd>img()</kbd> in the <a href="helpers/html_helper.html">HTML Helper</a> to remove an unneeded space (#4208).</li>
 			<li>Modified <kbd>anchor()</kbd> in the <a href="helpers/url_helper.html">URL helper</a> to convert entities in the title attribute (#4209).</li>
 			<li>Fixed a bug in <kbd>link_tag()</kbd> of the <a href="helpers/url_helper.html">URL helper</a> where a key was passed instead of a value.</li>
+			<li>Fixed a bug in DB_result::row() that prevented it from returning individual fields with MySQL NULL values</li>
 		</ul>
     </li>
 	<li>Plugins
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