php mysqli批量替换数据库表前缀实例
在php中有时我们要替换数据库中表前缀但是又不苦于一个个表去修改前缀吧,下面我自己写了一个mysqli批量替换数据库表前缀的php程序,希望些方法对你有帮助,代码如下:
- <?php
- header ( 'http-equiv="Content-Type" content="text/html; charset=utf-8"' );
- $DB_host = "localhost";
- $DB_user = "root";
- $DB_psw = "root3306";
- $DB_datebase = "gk_yue39_com";
- $DB_charset = "utf8";
- $dbprefix="yue392_com_";
- $new_dbprefix="yue39_com_";
- $db = new mysqli ( $DB_host, $DB_user, $DB_psw );
-
-
- if (mysqli_connect_errno ()) {
- printf ( "Connect failed: %sn", mysqli_connect_error () );
- exit ();
- }
-
- $db->select_db ( $DB_datebase );
-
- $db->set_charset ( $DB_charset );
-
-
- $sql = 'show tables';
- $result = $db->query ( $sql );
-
- echo $result->num_rows . ' 行结果 ' . $result->field_count . ' 列内容<br/>';
-
-
-
- echo '<table border="1" cellspacing="0" cellpadding="0" align="center" width="90%">';
-
-
-
- while ( true == ($field = $result->fetch_field ()) ) {
- echo '<th>' . $result->current_field . '_' . $field->name . '(' . $field->length . ')</th>';
- }
-
-
- while ( true == ($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 ();
- $db->close ();
- ?>