Query/drivers/mysql/mysql_util.php

123 lines
2.6 KiB
PHP

<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
* @package Query
* @author Timothy J. Warren
* @copyright Copyright (c) 2012 - 2014
* @link https://github.com/aviat4ion/Query
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
namespace Query\Driver;
/**
* MySQL-specific backup, import and creation methods
*
* @package Query
* @subpackage Drivers
* @method array get_dbs()
* @method mixed driver_query(string $sql, bool $filtered_index=TRUE)
* @method array get_system_tables()
* @method array get_tables()
* @method mixed query(string $sql)
* @method string quote(string $str)
*/
class MySQL_Util extends Abstract_Util {
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
$string = array();
// Get databases
$dbs = $this->get_dbs();
foreach($dbs as &$d)
{
// Skip built-in dbs
if ($d == 'mysql') continue;
// Get the list of tables
$tables = $this->driver_query("SHOW TABLES FROM `{$d}`", TRUE);
foreach($tables as &$table)
{
$array = $this->driver_query("SHOW CREATE TABLE `{$d}`.`{$table}`", FALSE);
$string[] = $array[0]['Create Table'];
}
}
return implode("\n\n", $string);
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @param array $exclude
* @return string
*/
public function backup_data($exclude=array())
{
$tables = $this->get_tables();
// Filter out the tables you don't want
if( ! empty($exclude))
{
$tables = array_diff($tables, $exclude);
}
$output_sql = '';
// Select the rows from each Table
foreach($tables as $t)
{
$sql = "SELECT * FROM `{$t}`";
$res = $this->query($sql);
$rows = $res->fetchAll(\PDO::FETCH_ASSOC);
// Skip empty tables
if (count($rows) < 1) continue;
// Nab the column names by getting the keys of the first row
$columns = @array_keys($rows[0]);
$insert_rows = array();
// Create the insert statements
foreach($rows as $row)
{
$row = array_values($row);
// Workaround for Quercus
foreach($row as &$r)
{
$r = $this->quote($r);
}
$row = array_map('trim', $row);
$row_string = 'INSERT INTO `'.trim($t).'` (`'.implode('`,`', $columns).'`) VALUES ('.implode(',', $row).');';
$row = NULL;
$insert_rows[] = $row_string;
}
$output_sql .= "\n\n".implode("\n", $insert_rows)."\n";
}
return $output_sql;
}
}
// End of mysql_util.php