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August 29, 2015 14:01
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<?php | |
$oldName = get_argument(1, 'You must specify the current database name', true); | |
$newName = get_argument(2, 'You must specify the new database name', true); | |
try | |
{ | |
echo 'Database renamer 1.0', "\n\n"; | |
echo "Renaming database ${oldName} to ${newName}\n"; | |
echo 'Connecting to mysql...', "\n"; | |
$pdo = new PDO('mysql:host=localhost;charset=UTF8', 'root'); | |
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); | |
echo 'Creating target database', "\n"; | |
$pdo->exec('CREATE DATABASE IF NOT EXISTS '.$newName); | |
echo 'Retrieving table information', "\n"; | |
$statement = $pdo->query('SHOW FULL TABLES IN '. $oldName .' WHERE Table_Type = \'BASE TABLE\''); | |
$tables = array(); | |
foreach ($statement->fetchAll() as $table) { | |
$tables[] = $table[0]; | |
} | |
$totalTables = count($tables); | |
echo 'Moving tables to new database', "\n"; | |
foreach ($tables as $idx => $table) { | |
$i = $idx+1; | |
for ($a = 0; $a < 100; $a++) echo "\x08"; | |
$name = table_name($table); | |
echo 'Moving table ', $name , ' ', round($i/$totalTables*100, 2), '% '; | |
$query = sprintf('RENAME TABLE %1$s.%3$s to %2$s.%3$s', $oldName, $newName, $table); | |
$pdo->exec($query); | |
} | |
echo "\n", 'Droping old database', "\n"; | |
$pdo->exec('DROP DATABASE IF EXISTS '.$oldName); | |
echo 'Job finished!!', "\n"; | |
} catch(Exception $e) | |
{ | |
die($e->getMessage()."\n"); | |
} | |
/** | |
* format the table name | |
* @param string $name | |
* @param int $max | |
* @return string | |
*/ | |
function table_name($name, $max = 50) | |
{ | |
if (strlen($name) > $max){ | |
$name = substr($name, 0, floor($max/2)).'...'.substr($name, (floor($max/2)-3)*-1); | |
} | |
return str_pad($name, $max); | |
} | |
/** | |
* get the cli argument | |
*/ | |
function get_argument($index, $errorMessage = 'Argument %s is required', $exitOnFail = false) | |
{ | |
global $argv; | |
if (isset($argv[$index])) | |
return $argv[$index]; | |
else | |
{ | |
echo sprintf($errorMessage, $index), "\n"; | |
if ($exitOnFail) | |
exit(1); | |
} | |
} |
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