Source of file Util.php

<?php declare(strict_types=1);

/**

 * Query

 *

 * SQL Query Builder / Database Abstraction Layer

 *

 * PHP version 7.4

 *

 * @package     Query

 * @author      Timothy J. Warren <tim@timshomepage.net>

 * @copyright   2012 - 2020 Timothy J. Warren

 * @license     http://www.opensource.org/licenses/mit-license.html  MIT License

 * @link        https://git.timshomepage.net/aviat/Query

 * @version     3.0.0

 */

namespace Query\Drivers\Mysql;

use PDO;

use Query\Drivers\AbstractUtil;

/**

 * MySQL-specific backup, import and creation methods

 */

class Util extends AbstractUtil {

	/**

	 * Create an SQL backup file for the current database's structure

	 *

	 * @return string

	 */

	public function backupStructure(): string

	{

		$string = [];

		// Get databases

		$driver = $this->getDriver();

		$dbs = $driver->getDbs();

		foreach($dbs as &$d)

		{

			// Skip built-in dbs

			// @codeCoverageIgnoreStart

			if ($d === 'mysql')

			{

				continue;

			}

			// @codeCoverageIgnoreEnd

			// Get the list of tables

			$tables = $driver->driverQuery("SHOW TABLES FROM `{$d}`", TRUE);

			foreach($tables as $table)

			{

				$array = $driver->driverQuery("SHOW CREATE TABLE `{$d}`.`{$table}`", FALSE);

				$row = current($array);

				if ( ! isset($row['Create Table']))

				{

					continue;

				}

				$string[] = $row['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 backupData(array $exclude=[]): string

	{

		$driver = $this->getDriver();

		$tables = $driver->getTables();

		// Filter out the tables you don't want

		if( ! empty($exclude))

		{

			$tables = array_diff($tables, $exclude);

		}

		$outputSql = '';

		// Select the rows from each Table

		foreach($tables as $t)

		{

			$sql = "SELECT * FROM `{$t}`";

			$res = $driver->query($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]);

			$insertRows = [];

			// Create the insert statements

			foreach($rows as $row)

			{

				$row = array_values($row);

				// Workaround for Quercus

				foreach($row as &$r)

				{

					$r = $driver->quote($r);

				}

				unset($r);

				$row = array_map('trim', $row);

				$rowString = 'INSERT INTO `'.trim($t).'` (`'.implode('`,`', $columns).'`) VALUES ('.implode(',', $row).');';

				$row = NULL;

				$insertRows[] = $rowString;

			}

			$outputSql .= "\n\n".implode("\n", $insertRows)."\n";

		}

		return $outputSql;

	}

}