Singleton method to handle database class and avoid "too many connections" errors

inc/MysqlConnector.php

@@ -0,0 +1,31 @@
+<?php
+
+class MysqlConnector {
+    private $connection = null;
+    private static $instance = null;
+
+    private function __construct() {
+        $this->connect();
+    }
+
+    public function connect() {
+        $this->connection = new PDO('mysql:host='.MYSQL_HOST.';dbname='.MYSQL_DB, MYSQL_LOGIN, MYSQL_PASSWORD);
+        $this->connection->query('SET NAMES utf8');
+    }
+
+    public function disconnect() {
+        $this->connection = null;
+    }
+
+    public function getConnection() {
+        return $this->connection;
+    }
+
+	public static function getInstance() {
+		
+		if (self::$instance === null) {
+			self::$instance = new self(); 
+		}
+		return self::$instance;
+	}
+}

inc/Storage.class.php

@@ -1,68 +1,23 @@
 <?php
 require_once('data/config.php');
+require_once('inc/MysqlConnector.php');
 
 class Storage {
     private $connection = null;
+    private $mysql_instance = null;
 
     public function __construct() {
-        $this->connect();
+        $this->mysql_instance = MysqlConnector::getInstance();
+        $this->connection = $this->mysql_instance->getConnection();
     }
 
     public function __destruct() {
-        $this->disconnect();
-    }
-
-    // Connection functions
-    // ====================
-    public function connect() {
-        $this->connection = new PDO('mysql:host='.MYSQL_HOST.';dbname='.MYSQL_DB, MYSQL_LOGIN, MYSQL_PASSWORD);
-        $this->connection->query('SET NAMES utf8');
-    }
-
-    public function disconnect() {
-        $this->connection = null;
-    }
-
-    // Getters
-    // =======
-    public function getHost() {
-        return $this->host;
-    }
-
-    public function getLogin() {
-        return $this->login;
-    }
-
-    public function getPassword() {
-        return $this->password;
-    }
-
-    public function getDb() {
-        return $this->db;
     }
 
     public function getConnection() {
         return $this->connection;
     }
 
-    // Setters
-    // =======
-    public function setHost($host) {
-        $this->host = host;
-    }
-
-    public function setLogin($login) {
-        $this->login = $login;
-    }
-
-    public function setPassword($password) {
-        $this->password = $password;
-    }
-
-    public function setDb($db) {
-        $this->db = $db;
-    }
-
     // Translates types in class to SQL types
     // ======================================
     public function typeToSQL($type) {