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index.php
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index.php
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<?php
abstract class Database {
protected $user;
protected $pass;
public function connect()
{
echo 'The class "', __METHOD__, '" was initiated! User : '.$this->user.' Pass : '.$this->pass.'<br />';
}
public function authentication($user, $pass)
{
$this->user = $user;
$this->pass = $pass;
echo 'The class "', __METHOD__, '" was initiated!<br />';
}
}
class Mysql extends Database {
function __constructor()
{
}
public function select()
{
echo 'The class "', __METHOD__, '" was initiated!<br />';
}
}
class Postgresql extends Database {
public function select()
{
echo 'The class "', __METHOD__, '" was initiated!<br />';
}
}
class Mssql extends Database {
public function connect()
{
echo 'The class "', __METHOD__, '" was initiated! User : '.$this->user.' Pass : '.$this->pass.'<br />';
}
public function select()
{
echo 'The class "', __METHOD__, '" was initiated!<br />';
}
}
$db = new Mysql();
$db->authentication('root', 'root');
$db->connect();
$db->select();
echo "<hr>";
$db = new Postgresql();
$db->authentication('root', 'root');
$db->connect();
$db->select();
echo "<hr>";
$db = new Mssql();
$db->authentication('ali', 'root');
$db->connect();
$db->select();