参数确实是true，但是仍是有警告mysql_fetch_row() expects parameter 1 to be resource

参数确实是true，但是还是有警告mysql_fetch_row() expects parameter 1 to be resource？

<br />function checkCancelUserStop($phoneNum)<br />{<br />	$con = mysql_connect("localhost", "root", "");<br />	if(!$con)<br />	{<br />		echo "<script language=\"JavaScript\"><br />			 alert('数据库连接失败！');  <br />			 </script>";<br />		echo "<script language='javascript' type='text/javascript'>";<br />		echo "window.location.href='$url'";<br />		echo "</script>";<br />		return;<br />	}	<br />	$result = mysql_select_db ("teleservice",$con);<br />	if(!$result)<br />	{<br />		echo "<script language=\"JavaScript\"><br />			 alert('选择数据库失败！');  <br />			 </script>";<br />		echo "<script language='javascript' type='text/javascript'>";<br />		echo "window.location.href='$url'";<br />		echo "</script>";<br />		return;<br />	}<br />	$result = mysql_query("SET NAMES 'GBK'");<br />	if(!$result)<br />	{<br />		echo "<script language=\"JavaScript\"><br />			 alert('设置字符集失败！');  <br />			 </script>";<br />		echo "<script language='javascript' type='text/javascript'>";<br />		echo "window.location.href='$url'";<br />		echo "</script>";<br />		return;<br />	}<br />	$query = "select state<br />			  from phoneDetail<br />			  where phoneDetail.phoneNum = $phoneNum";<br />	if($result) <br />	{<br />		echo "<script language=\"JavaScript\"><br />			 alert('查询号码原状态成功！');  <br />			 </script>";<br />		echo "<script language='javascript' type='text/javascript'>";<br />		echo "window.location.href='$url'";<br />		echo "</script>";		<br />	} else {<br />		echo "<script language=\"JavaScript\"><br />			 alert('查询号码原状态失败！');  <br />			 </script>";<br />		echo "<script language='javascript' type='text/javascript'>";<br />		echo "window.location.href='$url'";<br />		echo "</script>";<br />		return;<br />	}<br />	$oldState = "正常开通";<br />	while($row = mysql_fetch_row($result))<br />	{<br />		echo "in while loop...";<br />		$oldState = $row[0];<br />		echo $oldState;<br />	}<br />	if($oldState == "主动停机") {<br />		echo "yes";<br />		return true;<br />	} else {<br />		echo "no";<br />		return false;<br />	}<br />	mysql_close($con);<br />}

问题：通过调试，已经可以成功查询到号码的原状态。此时$result = 1；但是后面fetch_row的时候，不能进入到while循环中，出现了警告：Warning: mysql_fetch_row() expects parameter 1 to be resource, boolean given in H:\wamp\www\frr_cancelUserStop.php on line 58
请问：$result = 1确实是1（true）的啊，那为什么进不了循环？
怎么才能取得结果呢？
谢谢各位！
------解决思路----------------------
SQL 指令为执行