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 />}
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