php如何删除数据库表

DROP TABLE table_name ;

root@host# mysql -u root -p
Enter password:*******
mysql> use RUNOOB;
Database changed
mysql> DROP TABLE runoob_tbl
Query OK, 0 rows affected (0.8 sec)
mysql>

mysqli_query(connection,query,resultmode);

<?php
$dbhost = &#39;localhost&#39;;  // mysql服务器主机地址
$dbuser = &#39;root&#39;;            // mysql用户名
$dbpass = &#39;123456&#39;;          // mysql用户名密码
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
  die(&#39;连接失败: &#39; . mysqli_error($conn));
}
echo &#39;连接成功<br />&#39;;
$sql = "DROP TABLE runoob_tbl";
mysqli_select_db( $conn, &#39;RUNOOB&#39; );
$retval = mysqli_query( $conn, $sql );
if(! $retval )
{
  die(&#39;数据表删除失败: &#39; . mysqli_error($conn));
}
echo "数据表删除成功\n";
mysqli_close($conn);
?>

mysql> show tables;
Empty set (0.01 sec)