classes/db.php

   1 <?php
   2 class Db implements IDb {
   3         private static $instance;
   4         private $adapter;
   5         private $link;
   6
   7         private function __construct() {
   8
   9                 $er = error_reporting(E_ALL);
  10
  11                 if (defined('_ENABLE_PDO') && _ENABLE_PDO && class_exists("PDO")) {
  12                         $this->adapter = new Db_PDO();
  13                 } else {
  14                         switch (DB_TYPE) {
  15                         case "mysql":
  16                                 $this->adapter = new Db_Mysqli();
  17                                 break;
  18                         case "pgsql":
  19                                 $this->adapter = new Db_Pgsql();
  20                                 break;
  21                         default:
  22                                 die("Unknown DB_TYPE: " . DB_TYPE);
  23                         }
  24                 }
  25
  26                 if (!$this->adapter) die("Error initializing database adapter for " . DB_TYPE);
  27
  28                 $this->link = $this->adapter->connect(DB_HOST, DB_USER, DB_PASS, DB_NAME, defined('DB_PORT') ? DB_PORT : "");
  29
  30                 if (!$this->link) {
  31                         die("Error connecting through adapter: " . $this->adapter->last_error());
  32                 }
  33
  34                 error_reporting($er);
  35         }
  36
  37         private function __clone() {
  38                 //
  39         }
  40
  41         public static function get() {
  42                 if (self::$instance == null)
  43                         self::$instance = new self();
  44
  45                 return self::$instance;
  46         }
  47
  48         static function quote($str){
  49                 return("'$str'");
  50         }
  51
  52         function reconnect() {
  53                 $this->link = $this->adapter->connect(DB_HOST, DB_USER, DB_PASS, DB_NAME, defined('DB_PORT') ? DB_PORT : "");
  54         }
  55
  56         function connect($host, $user, $pass, $db, $port) {
  57                 //return $this->adapter->connect($host, $user, $pass, $db, $port);
  58                 return ;
  59         }
  60
  61         function escape_string($s, $strip_tags = true) {
  62                 return $this->adapter->escape_string($s, $strip_tags);
  63         }
  64
  65         function query($query, $die_on_error = true) {
  66                 return $this->adapter->query($query, $die_on_error);
  67         }
  68
  69         function fetch_assoc($result) {
  70                 return $this->adapter->fetch_assoc($result);
  71         }
  72
  73         function num_rows($result) {
  74                 return $this->adapter->num_rows($result);
  75         }
  76
  77         function fetch_result($result, $row, $param) {
  78                 return $this->adapter->fetch_result($result, $row, $param);
  79         }
  80
  81         function close() {
  82                 return $this->adapter->close();
  83         }
  84
  85         function affected_rows($result) {
  86                 return $this->adapter->affected_rows($result);
  87         }
  88
  89         function last_error() {
  90                 return $this->adapter->last_error();
  91         }
  92
  93         function last_query_error() {
  94                 return $this->adapter->last_query_error();
  95         }
  96 }
  97 ?>