废话不多说,直接上代码

<"localhost", "root", "root");
$dbname = "db";
if ($con) {
 if (mysql_select_db($dbname, $con)) {
  $sql = "show tables like 'pre_tb_%'";
  $ret = mysql_query($sql);
  while($row = mysql_fetch_assoc($ret)){
   $info1[] = $row;
  }
  foreach ($info1 as $v) {
   $chidarr1[] = substr($v['Tables_in_multiopen (pre_tb_%)'],7);//获取标记号
  }
  foreach ($chidarr1 as $val) {
   $tabname = 'stat_adclick_'.$val;
   $sql = "alter table $tabname add column c2 int default 0 after p";
   mysql_query($sql);
   $sql = "alter table $tabname DROP PRIMARY KEY";
   mysql_query($sql);
   $sql = "alter table $tabname add primary key(c2,p)";
   mysql_query($sql);
   $sql = "alter table $tabname drop index old_index";
   mysql_query($sql);
   $sql = "create index idx_newincex on $tabname (c2,p)";
   mysql_query($sql);
  }
 }
}
mysql_close($con);
?>

以上这篇php批量修改表结构实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

标签:
php,批量修改表结构

免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
桃源资源网 Design By www.nqtax.com

评论“php批量修改表结构实例”

暂无“php批量修改表结构实例”评论...