Query/drivers/mysql/mysql_util.php

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<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
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* @package Query
* @author Timothy J. Warren
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* @copyright Copyright (c) 2012 - 2014
* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
namespace Query\Driver\Util;
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/**
* MySQL-specific backup, import and creation methods
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*
* @package Query
* @subpackage Drivers
*/
class MySQL_Util extends Abstract_Util {
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
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$string = array();
// Get databases
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$dbs = $this->get_driver()->get_dbs();
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foreach($dbs as &$d)
{
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// Skip built-in dbs
if ($d == 'mysql') continue;
// Get the list of tables
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$tables = $this->get_driver()->driver_query("SHOW TABLES FROM `{$d}`", TRUE);
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foreach($tables as $table)
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{
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$array = $this->get_driver()->driver_query("SHOW CREATE TABLE `{$d}`.`{$table}`", FALSE);
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$row = current($array);
if ( ! isset($row['Create Table'])) continue;
$string[] = $row['Create Table'];
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}
}
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return implode("\n\n", $string);
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
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* @param array $exclude
* @return string
*/
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public function backup_data($exclude=array())
{
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$tables = $this->get_driver()->get_tables();
// Filter out the tables you don't want
if( ! empty($exclude))
{
$tables = array_diff($tables, $exclude);
}
$output_sql = '';
// Select the rows from each Table
foreach($tables as $t)
{
$sql = "SELECT * FROM `{$t}`";
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$res = $this->get_driver()->query($sql);
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$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)
{
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$r = $this->get_driver()->quote($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;
}
}
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// End of mysql_util.php