49 lines
1.2 KiB
PHP
49 lines
1.2 KiB
PHP
<?php
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namespace Khofmann\Database;
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use PDO;
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use Khofmann\Config\Config;
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use Exception;
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class Database extends PDO
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{
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private static array $instances = [];
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private function __construct(string $dsn, string $username = null, string $password = null, array $options = null)
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{
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parent::__construct($dsn, $username, $password, $options);
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}
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private function __clone()
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{
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throw new Exception("Cannot clone a singleton.");
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}
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private function __wakeup()
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{
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throw new Exception("Cannot unserialize a singleton.");
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}
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public static function getInstance(): Database
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{
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$cls = static::class;
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if (!isset(self::$instances[$cls])) {
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$dataAccess = Config::getDatabase();
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self::$instances[$cls] = new static(
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"mysql:host={$dataAccess["host"]};dbname={$dataAccess["database"]};charset={$dataAccess["charset"]}",
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$dataAccess["user"],
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$dataAccess["passwd"],
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[
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PDO::ATTR_PERSISTENT => false,
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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PDO::ATTR_EMULATE_PREPARES => false,
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]
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);
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}
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return self::$instances[$cls];
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}
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}
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