php如何判断SQL语句的查询结果是否为空？
代码如下：
<br />
$sql =mysql_query( "select * from tv_video where title like '%$keyword%' limit $offset,$PageSize");<br />
$result=mysql_fetch_array($sql);<br />
if(!empty($result)){<br />
while($result=mysql_fetch_array($sql)){echo "hello word!"}<br />
if(!empty($result)){<br />
echo "记录为空";<br />
}<br />
$result =mysql_query( "select * from tv_video where title like '%$keyword%' limit $offset,$PageSize");<br /> if (mysql_num_rows($result) < 1) echo '记录集为空';
$result =mysql_query( "select * from tv_video where title like '%$keyword%' limit $offset,$PageSize");<br />
if(count($result)<0)<br />
{<br />
echo "查询无数据！";<br />
}
