Query/drivers/pgsql/pgsql_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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/**
* Posgres-specific backup, import and creation methods
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*
* @package Query
* @subpackage Drivers
*/
class PgSQL_Util extends Abstract_Util {
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// TODO Implement Backup function
return '';
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @param array $exclude
* @return string
*/
public function backup_data($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);
}
$output_sql = '';
// Get the data for each object
foreach($tables as $t)
{
$sql = 'SELECT * FROM "'.trim($t).'"';
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$res = $this->get_driver()->query($sql);
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$obj_res = $res->fetchAll(\PDO::FETCH_ASSOC);
// Don't add to the file if the table is empty
if (count($obj_res) < 1) continue;
$res = NULL;
// Nab the column names by getting the keys of the first row
$columns = @array_keys($obj_res[0]);
$insert_rows = array();
// Create the insert statements
foreach($obj_res as $row)
{
$row = array_values($row);
// Quote values as needed by type
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$row = array_map(array($this->get_driver(), 'quote'), $row);
$row = array_map('trim', $row);
$row_string = 'INSERT INTO "'.trim($t).'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
$row = NULL;
$insert_rows[] = $row_string;
}
$obj_res = NULL;
$output_sql .= "\n\n".implode("\n", $insert_rows)."\n";
}
return $output_sql;
}
}
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// End of pgsql_util.php