php中批量删除Mysql中相同前缀的数据表的代码

<?php
mysql_connect('','','');
mysql_select_db('');
$rs=mysql_query('show tables');
while($arr=mysql_fetch_array($rs)){
$tf=strpos($arr[0],'class_');
if($tf===0){
$ft=mysql_query("drop table $arr[0]");
if($ft){
echo "$arr[0] 删除成功！<br>";
}
}
}
?>

<?php
function deldata($dbname,$tableflag){
$db_host = 'localhost';
$db_port = '3306';
$db_user = 'user';
$db_pass = 'password';
$connect =mysql_connect($db_host,$db_user,$db_pass);
mysql_select_db($dbname);
$result = mysql_query("show table status from $dbname",$connect);
$data=mysql_fetch_array($result);
while($data=mysql_fetch_array($result)) {
$table=mysubstr($data[name],"_");
if($table==$tableflag){
//测试之用
/*echo $data[name];
echo "
";
echo $table;
echo "
";*/
mysql_query("drop table $data[name]");
}
}
return true;
}
/*截取某个特定字符前的所有字符函数
*$str 为待截取字符串
*$flag 特定字符如“_”
*/
function mysubstr($str,$flag){
$pos=strpos($str,$flag);
return substr($str,0,$pos);
}
?>