<?php
/* script code by Praetorian Alexandria. */
/* global9.net | Belida.com (c) 2011     */
 
$db_server = 'localhost'; // if this script in your DB server on localhost
$db_username = 'dbusername'; // DB username
$db_password = 'pwdusername'; // PASSWORD DB username
$db_name = 'databasename'; // Name of your Database
 
$pattern = "oldexample_"; // Old Prefix Name Table
$new_pattern = "newexample_"; // New Prefix Name Table (e.g. "newexample_") 
 
// login to MySQL server
$link = mysql_connect( $db_server, $db_username, $db_password);
 
if (!$link)
{
  die('Could not connect: ' . mysql_error());
}
 
// list all tables in the database containing the search pattern
$sql = "SHOW TABLES FROM `" . $db_name . "`";
$sql .= " LIKE '%" . $pattern . "%'";
 
$result = mysql_query ( $sql, $link );
if (!$result)
{
  die("Invalid query: " . mysql_error( $link ));
}
 
$renamed = 0;
$failed = 0;
 
while ( $row = mysql_fetch_array ($result) )
{
  // rename every table by replacing the search pattern 
  // with a new pattern
  $table_name = $row[0];
  $new_table_name = str_replace ( $pattern, $new_pattern, $table_name);
 
 
  $sql = "RENAME TABLE `" . $db_name . "`.`" . $table_name . "`";
  $sql .= " TO `" . $db_name . "`.`" . $new_table_name . "`";
 
 
  $result_rename = mysql_query ( $sql, $link );
  if ($result_rename)
  {
    echo "Table `" . $table_name . "` renamed to :`";
    echo $new_table_name . "`.\n";
    $renamed++;
  }
  else
  {
    // notify when the renaming failed and show reason why
    echo "Renaming of table `" . $table_name . "` has failed: ";
    echo mysql_error( $link ) . "\n";
    $failed++;
  }
}
 
echo $renamed . " tables were renamed, " . $failed . " failed.\n";
 
// close connection to MySQL server
mysql_close( $link );
 
?>