Source of file Util.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\Drivers\Pgsql;

/**

 * Posgres-specific backup, import and creation methods

 *

 * @package Query

 * @subpackage Drivers

 */

class Util extends \Query\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())

	{

		$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).'"';

			$res = $this->get_driver()->query($sql);

			$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

				$row = array_map(array($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;

	}

}

// End of pgsql_util.php