$conn = mysql_connect("localhost", "root", "");
@mysql_select_db("dbname", $conn);
$numresult=mysql_query("select *from book where class='$class'", $conn);
$num=mysql_num_rows($numresult);
@mysql_select_db("dbname", $conn);
$numresult=mysql_query("select *from book where class='$class'", $conn);
$num=mysql_num_rows($numresult);
解决方案 »
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