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@ 2017-04-27T15:52:43Z

<?php

interface DbAdapterInterface
{
    /**
     * @param DateTime $date
     * @return string
     */ 
    public function convertFromDateTime(DateTime $date);
    
    /**
     * @param DateTime $date
     * @return array
     */ 
    public function convertToDateTime(array $row);
}

class MySqlAdapter implements DbAdapterInterface
{
    public function convertFromDateTime(DateTime $date)
    {
        return $date->format('Y-m-d H:i:s');
    }
    
    public function convertToDateTime(array $row)
    {
        return new DateTime($row['date']);
    }
}

class OracleAdapter implements DbAdapterInterface
{
    public function convertFromDateTime(DateTime $date)
    {
        return $date->getTimestamp();
    }
    
    public function convertToDateTime(array $row)
    {
        return new DateTime('@'.$row['date']);
    }
}

class Db
{
    /** @var DbAdapterInterface $adapter */
    private $adapter;
    
    public function setAdapter(DbAdapterInterface $adapter)
    {
        $this->adapter = $adapter;
    }
    
    public function insert($data)
    {
        $date = $data['date'];
        $dateString = $this->adapter->convertFromDateTime($date);
        // do your insert
        return $dateString;
    }
    
    public function findById($id)
    {
        // fetch row by id here, this is just an example, I'm using the id as the date string
        $row = ['date' => $id];
        $row = $this->adapter->convertToDateTime($row);
        // do your insert
        return $row;
    }
}


// Example

$data = [
    'date' => new DateTime(),    
];

$db = new Db();
$db->setAdapter(new MySqlAdapter());
echo $db->insert($data)."\n";
$db->setAdapter(new OracleAdapter());
echo $db->insert($data)."\n";

$time = '1493308146';
var_dump( $db->findById($time));

$db->setAdapter(new MySqlAdapter());
$time = '2014-09-18 22:00:00';
var_dump( $db->findById($time));

Output for 7.0.0 - 7.0.17, 7.0.20, 7.1.0 - 7.1.2, 7.1.4 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12: 2017-04-27 17:52:43 1493308363 object(DateTime)#3 (3) { ["date"]=> string(26) "2017-04-27 15:49:06.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "+00:00" } object(DateTime)#4 (3) { ["date"]=> string(26) "2014-09-18 22:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 7.3.32 - 7.3.33, 8.0.13: 2017-04-27 15:52:43 1493308363 object(DateTime)#3 (3) { ["date"]=> string(26) "2017-04-27 15:49:06.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "+00:00" } object(DateTime)#4 (3) { ["date"]=> string(26) "2014-09-18 22:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.1.3: 2017-04-27 17:52:44 1493308364 object(DateTime)#3 (3) { ["date"]=> string(26) "2017-04-27 15:49:06.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "+00:00" } object(DateTime)#4 (3) { ["date"]=> string(26) "2014-09-18 22:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 7.0.18: 2017-04-27 17:52:42 1493308362 object(DateTime)#3 (3) { ["date"]=> string(26) "2017-04-27 15:49:06.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "+00:00" } object(DateTime)#4 (3) { ["date"]=> string(26) "2014-09-18 22:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

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