为什么mysql_num_rows($ result)返回1,即使$ result返回空结果集?
$resut=mysql_query("select * from tablename where column1='$memberid' and (TIME_TO_SEC(TIMEDIFF(NOW(),when_submit))/60<2)")or die(mysql_error());
$count=mysql_num_rows($result);
当我echo $count
,我得到
。
非常尖锐的眼睛! +1 – 2009-12-20 10:38:53