PHP教程
<?php 
header ( 'http-equiv="Content-Type" content="text/html; charset=utf-8"' ); 
$DB_host = "localhost"; //數(shù)據(jù)庫(kù)主機(jī) 
$DB_user = "root"; //數(shù)據(jù)庫(kù)用戶(hù) 
$DB_psw = "root3306"; //數(shù)據(jù)庫(kù)暗碼 
$DB_datebase = "gk_yue39_com"; //數(shù)據(jù)庫(kù)名 
$DB_charset = "utf8"; //數(shù)據(jù)庫(kù)字符集 
$dbprefix="yue392_com_"; 
$new_dbprefix="yue39_com_"; 
$db = new mysqli ( $DB_host, $DB_user, $DB_psw ); //實(shí)例化對(duì)象 
 
//檢查連接 
if (mysqli_connect_errno ()) { 
 printf ( "Connect failed: %sn", mysqli_connect_error () ); 
 exit (); 
} 
 
$db->select_db ( $DB_datebase ); //選擇操作數(shù)據(jù)庫(kù) 
 
$db->set_charset ( $DB_charset ); //設(shè)置數(shù)據(jù)庫(kù)字符集 
 
//執(zhí)行一個(gè)查詢(xún) 
$sql = 'show tables'; 
$result = $db->query ( $sql ); 
 
echo $result->num_rows . ' 行結(jié)果 ' . $result->field_count . ' 列內(nèi)容<br/>'; 
 
//$result->data_seek('5');//從結(jié)果集中第5條開(kāi)始取結(jié)果 
 
echo '<table border="1" cellspacing="0" cellpadding="0" align="center" width="90%">'; 
 
//循環(huán)輸出字段名 
//$result->field_seek(2);//從字段集中第2條開(kāi)始取結(jié)果 
while ( true == ($field = $result->fetch_field ()) ) { 
 echo '<th>' . $result->current_field . '_' . $field->name . '(' . $field->length . ')</th>'; 
} 
 
//循環(huán)輸出查詢(xún)結(jié)果 
while ( true == ($row = $result->fetch_assoc ()) ) { 
 echo '<tr>'; 
 foreach ( $row as $col ) { 
$sql="rename table `".$col."` to `".str_replace ( $dbprefix, $new_dbprefix, $col)."`"; 
 if($db->query ( $sql )){ 
 echo '<td align="center">' . $sql. '</td><td><font color="blue"> success</font></td>'; 
 }else{ 
 echo '<td align="center">' . $sql. '</td><td><font color="red"> failed</font></td>';
 } 
 } 
 echo '</tr>'; 
} 
 
echo '</table>'; 
$result->free ();//釋放結(jié)果集 
$db->close (); //關(guān)閉連接 
?>