create database test;
create table users(
id int not null,
name varchar(10),
pwd varchar(10),
email varchar(20)
)
insert into users values(1,'shunping','shunping','aa@163.com');
insert into users values(2,'shunping2','shunping2','bb@163.com');

2. 我用的是Postgreql

在\CodeIgniter\system\application\config\database.php文件中配置數(shù)據(jù)庫(kù)參數(shù)：

$active_group = "default";
$db['default']['hostname'] = "localhost";
$db['default']['username'] = "postgres";
$db['default']['password'] = "admin";
$db['default']['database'] = "test";
$db['default']['dbdriver'] = "postgre";
$db['default']['dbprefix'] = "";
$db['default']['active_r'] = TRUE;
$db['default']['pconnect'] = FALSE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = "";
$db['default']['port'] = "5432";

在\CodeIgniter\system\application\controllers目錄下測(cè)試文件db1.php內(nèi)容如下：

<?php
class Db1 extends Controller{
  function index(){
    $this->load->database();
    $query=$this->db->query("select name,pwd,email from users");
    foreach ($query->result() as $row) {//返回對(duì)象數(shù)組
      echo $row->name;
      echo $row->pwd;
      echo $row->email."<br>";
    }
    echo "Total Result==".$query->num_rows();
  }
}
?>

打開(kāi)瀏覽器敲入地址：

http://localhost:8888/index.php/MyController/db1

ok搞定！

我想大家肯定也遇到過(guò)連不上數(shù)據(jù)庫(kù)的問(wèn)題，我花費(fèi)了好些精力才解決這個(gè)問(wèn)題，現(xiàn)在告訴大家，希望對(duì)大家學(xué)習(xí)CodeIgniter這個(gè)優(yōu)秀的PHP框架有所幫助。

更多關(guān)于PHP相關(guān)內(nèi)容感興趣的讀者可查看本站專(zhuān)題：《codeigniter入門(mén)教程》、《CI(CodeIgniter)框架進(jìn)階教程》、《php日期與時(shí)間用法總結(jié)》、《php面向?qū)ο蟪绦蛟O(shè)計(jì)入門(mén)教程》、《php字符串(string)用法總結(jié)》、《php+mysql數(shù)據(jù)庫(kù)操作入門(mén)教程》及《php常見(jiàn)數(shù)據(jù)庫(kù)操作技巧匯總》

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