Array is empty<br>

<div style='clear:both;background-color:grey;border: 3px solid red;padding:8px'><h1>Undefined variable: banner</h1><b>File: /mnt/pc-www/dod/manage/siteFunctions.inc.php (852) Error 8</b><pre style="background-color: black;border: 1px solid white;color: white;"><span style="color: blue;margin-right: 10px;">848</span>	 	dbQuery($sql);
<span style="color: blue;margin-right: 10px;">849</span>		if(defined(&quot;NO_LOW_PRIORITY&quot;) &amp;&amp; file_exists('low_priority.banner.sql'))
<span style="color: blue;margin-right: 10px;">850</span>			file_put_contents('low_priority.banner.sql', $sql . &quot;;\n&quot;, FILE_APPEND);
<span style="color: blue;margin-right: 10px;">851</span>	}
<span style="color: blue;margin-right: 10px;">852</span><b style="background-color: darkblue;color:yellow;border: 1px dotted white;">	return $&lt;u&gt;banner&lt;/u&gt;;
</b><span style="color: blue;margin-right: 10px;">853</span>}
<span style="color: blue;margin-right: 10px;">854</span>
<span style="color: blue;margin-right: 10px;">855</span>if( ! function_exists('dbExists')){
<span style="color: blue;margin-right: 10px;">856</span>	function dbExists($table, $rec){
<span style="color: blue;margin-right: 10px;">857</span>		if($table == 'content' &amp;&amp; $rec['content_category'] == 4 &amp;&amp; $rec['content_track'] == 130 &amp;&amp; ($rec['content_created'] - $rec['content_posted']) &gt; 2592000)
</pre></div>