198 lines
4.6 KiB
PHP
Executable File
198 lines
4.6 KiB
PHP
Executable File
<?php
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/**************************
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* DatabaseDriver *
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* 08-04-2016 *
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***************************
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* Designed & Developed by *
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* xdrm-brackets *
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***************************
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* https://xdrm.io/ *
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**************************/
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namespace database\core;
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use \error\core\Error;
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use \error\core\Err;
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class DatabaseDriver{
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/* STATIC ATTRIBUTES */
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private static function conf(){
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// YOUR CONFIGURATION BEHIND
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$path = __CONFIG__.'/database-driver.json';
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/* (1) Checks the file */
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if( !is_file($path) )
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return [];
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/* (2) Checks json */
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$parsed = json_decode( file_get_contents($path), true );
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if( !is_array($parsed) )
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return [];
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/* (3) Returns configuration */
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return $parsed;
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}
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private static $path; // Databases configurations files
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private static $config; // PDO configurations
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private static $instance = []; // Database driver instance list
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public $error;
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/* ATTRIBUTES */
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private $host;
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private $dbname;
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private $username;
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private $password;
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private $pdo;
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/* CONSTRUCTOR OF A DATABASE DRIVER
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*
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* @host<String> Database Server's host
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* @dbname<String> Database name
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* @username<String> Database username
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* @password<String> Database password
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*
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*/
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private function __construct($host, $dbname, $username, $password){
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/* (2) Stores configuration */
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$this->host = $host;
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$this->dbname = $dbname;
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$this->username = $username;
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$this->password = $password;
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try{
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$this->pdo = new \PDO('mysql:host='.$this->host.';dbname='.$this->dbname, $this->username, $this->password, [
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\PDO::ATTR_DEFAULT_FETCH_MODE => \PDO::FETCH_ASSOC,
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\PDO::ATTR_TIMEOUT => 5
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]);
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// On signale que tout s'est bien passe
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$this->error = new Error(Err::Success);
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}catch(Exception $e){
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// On signale qu'il y a une erreur
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$this->error = new Error(Err::PDOConnection);
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}
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}
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/************************************************
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**** Multiton Management (static) ****
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************************************************/
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/* ADDS A NEW CONNECTION
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*
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* @label<String> [optional] Database Label
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*
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* @return status<Boolean> If added successfully
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*
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*/
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private static function add($label=null){
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$conf = self::conf();
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/* [1] Default values
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=========================================================*/
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/* (1) If label isn't given */
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is_null($label) && ($label = 'default');
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/* (2) If label and no path */
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if( $label !== 'default' && !isset($conf[$label]) )
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return false;
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/* [3] Instanciates the driver
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=========================================================*/
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try{
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/* (1) If local -> instanciates with local configuration */
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// if( !checkdnsrr($_SERVER['SERVER_NAME'], 'NS') )
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self::$instance[$label] = new DatabaseDriver($conf[$label]['local']['host'], $conf[$label]['local']['dbname'], $conf[$label]['local']['user'], $conf[$label]['local']['password']);
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/* (2) If Remote -> instanciates with Remote configuration */
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// else
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// self::$instance[$label] = new DatabaseDriver($conf[$label]['remote']['host'], $conf[$label]['remote']['dbname'], $conf[$label]['remote']['user'], $conf[$label]['remote']['password']);
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return true;
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}catch(\Exception $e){
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/* (3) If fails */
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return false;
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}
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}
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/* GET A DATABASE DRIVER INSTANCE
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*
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* @label<String> [optional] Driver's label
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*
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* @return driver<Database> Multiton
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*
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*/
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public static function get($label=null){
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$conf = self::conf();
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/* [1] Checks arguments
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=========================================================*/
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/* (1) Label default value */
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is_null($label) && ($label = 'default');
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/* (2) If no label, or unknown label */
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if( is_null($label) || !isset(self::$instance[$label]) ){
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/* (2.1) Try to add the configuration if exists */
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if( isset($conf[$label]) ){
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self::add($label);
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return self::get($label);
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}
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throw new \Exception('Database @label is incorrect.');
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}
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/* [2] Returns instance
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=========================================================*/
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return self::$instance[$label];
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}
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/** retourne la connection statique
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* @param null $label
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* @return \PDO
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*/
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public static function getPDO($label=null){
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$instance = self::get($label);
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return $instance->pdo;
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}
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public function pdo(){
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return $this->pdo;
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}
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public function getConfig(){
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return [
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'host' => $this->host,
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'dbname' => $this->dbname,
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'username' => $this->username
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];
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}
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}
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?>
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