参数确实是true，但是仍是有警告mysql_fetch_row()expectsparameter1toberesource

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

function checkCancelUserStop($phoneNum)
{
	$con = mysql_connect("localhost", "root", "");
	if(!$con)
	{
		echo "";
		echo "";
		return;
	}	
	$result = mysql_select_db ("teleservice",$con);
	if(!$result)
	{
		echo "";
		echo "";
		return;
	}
	$result = mysql_query("SET NAMES 'GBK'");
	if(!$result)
	{
		echo "";
		echo "";
		return;
	}
	$query = "select state
			  from phoneDetail
			  where phoneDetail.phoneNum = $phoneNum";
	if($result) 
	{
		echo "";
		echo "";		
	} else {
		echo "";
		echo "";
		return;
	}
	$oldState = "正常开通";
	while($row = mysql_fetch_row($result))
	{
		echo "in while loop...";
		$oldState = $row[0];
		echo $oldState;
	}
	if($oldState == "主动停机") {
		echo "yes";
		return true;
	} else {
		echo "no";
		return false;
	}
	mysql_close($con);
}

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