Query/src/Drivers/Mysql/Util.php

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<?php declare(strict_types=1);
/**
* Query
*
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* SQL Query Builder / Database Abstraction Layer
*
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* PHP version 7.1
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*
* @package Query
* @author Timothy J. Warren <tim@timshomepage.net>
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* @copyright 2012 - 2018 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link https://git.timshomepage.net/aviat4ion/Query
*/
namespace Query\Drivers\Mysql;
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use PDO;
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use Query\Drivers\AbstractUtil;
/**
* MySQL-specific backup, import and creation methods
*/
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class Util extends AbstractUtil {
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
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public function backupStructure(): string
{
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$string = [];
// Get databases
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$dbs = $this->getDriver()->getDbs();
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foreach($dbs as &$d)
{
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// Skip built-in dbs
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// @codeCoverageIgnoreStart
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if ($d === 'mysql')
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{
continue;
}
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// @codeCoverageIgnoreEnd
// Get the list of tables
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$tables = $this->getDriver()->driverQuery("SHOW TABLES FROM `{$d}`", TRUE);
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foreach($tables as $table)
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{
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$array = $this->getDriver()->driverQuery("SHOW CREATE TABLE `{$d}`.`{$table}`", FALSE);
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$row = current($array);
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if ( ! isset($row['Create Table']))
{
continue;
}
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$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 $exclude
* @return string
*/
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public function backupData($exclude=[]): string
{
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$tables = $this->getDriver()->getTables();
// Filter out the tables you don't want
if( ! empty($exclude))
{
$tables = array_diff($tables, $exclude);
}
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$outputSql = '';
// Select the rows from each Table
foreach($tables as $t)
{
$sql = "SELECT * FROM `{$t}`";
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$res = $this->getDriver()->query($sql);
$rows = $res->fetchAll(PDO::FETCH_ASSOC);
// Skip empty tables
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if (count($rows) < 1)
{
continue;
}
// Nab the column names by getting the keys of the first row
$columns = @array_keys($rows[0]);
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$insertRows = [];
// Create the insert statements
foreach($rows as $row)
{
$row = array_values($row);
// Workaround for Quercus
foreach($row as &$r)
{
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$r = $this->getDriver()->quote($r);
}
$row = array_map('trim', $row);
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$rowString = 'INSERT INTO `'.trim($t).'` (`'.implode('`,`', $columns).'`) VALUES ('.implode(',', $row).');';
$row = NULL;
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$insertRows[] = $rowString;
}
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$outputSql .= "\n\n".implode("\n", $insertRows)."\n";
}
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return $outputSql;
}
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}