php實現mysql數據庫隨機重排例子

 程序代碼

 代碼如下  

<?
//數據庫連接就不寫在這裡面了
$s = isset( $_GET['s'] )?$_GET['s']:0;
$e = isset( $_GET['e'])?$_GET['e']:50;
$count =85000;

if( $s < $count )
{
 $sql = "select * from 表前綴_info where isget =0 order by id desc limit $s,$e ";
 $query = mysql_query( $sql );
 while( $rs = mysql_fetch_array( $query ) )
 {
  $id = $rs['id'];
  $sss = $rs['sss'];
  $typeid = $rs['typeid'];
  $isget = $rs['isget'];
  $sql = "insert into 表前綴_info_bak (id,表前綴,typeid,isget) values('$id','$sss','$typeid','$isget')";
  mysql_query( $sql ) ;
  echo $sql;
  //exit;
  $sqlu = "update 表前綴_info set isget=1 where id =".$rs['id'];
  mysql_query( $sqlu );
 }
 echo '<meta http-equiv="refresh" content="0;url=rand.php?s='.($s+50).'&e=50">正在處理數據，當前為'.$s.'條．．．．．．';
}
else
{
 echo '完成所有數據處理 <a href=rand.php>再隨機排序一次</a>';
}
?>