代碼點火器 - 嘗試配置database.php使用PDO驅動程序時出錯

Question

我想要在代碼點火器2.1.1中運行新的PDO驅動程序（以開始）本地（Mac OS 10.7）副本應用程序。 我最初使用Active Record對所有數據庫操作進行了編碼，現在我想在我的模型文件中使用PDO準備的語句。

我修改 '的application/config/database.php中' 像這樣： （注意幾個小的嵌入式問題）

[snip] 

$active_group = 'local_dev'; 

$active_record = TRUE;//<---BTW, will this need to stay TRUE to make CI sessions work? For better security, don't we want db-based CI sessions to use PDO too? 
//http://codeigniter.com/user_guide/database/configuration.html: 
    //Note: that some CodeIgniter classes such as Sessions require Active Records be enabled to access certain functionality. 

//this is the config setting that I am guessing (?) is my main problem: 

$db['local_dev']['hostname'] = 'localhost:/tmp/mysql.sock'; 

// 1.) if $db['local_dev']['dbdriver']='mysql', then here ^^^ 'localhost:/tmp/mysql.sock' works, 2.) but if $db['local_dev']['dbdriver']='pdo', then it fails with error msg. shown below. 

$db['local_dev']['username'] = 'root'; 
$db['local_dev']['password'] = ''; 
$db['local_dev']['database'] = 'mydbname'; 
$db['local_dev']['dbdriver'] = 'pdo'; 
$db['local_dev']['dbprefix'] = ''; 
$db['local_dev']['pconnect'] = TRUE; 
$db['local_dev']['db_debug'] = TRUE;//TRUE 
$db['local_dev']['cache_on'] = FALSE; 
$db['local_dev']['cachedir'] = ''; 
$db['local_dev']['char_set'] = 'utf8'; 
$db['local_dev']['dbcollat'] = 'utf8_general_ci'; 
$db['local_dev']['swap_pre'] = ''; 
$db['local_dev']['autoinit'] = TRUE; 
$db['local_dev']['stricton'] = FALSE; 
[snip] 

通過以上的配置，只要我打開一個控制器，我得到。此錯誤消息：

Fatal error: Uncaught exception 'PDOException' with message 'could not find driver' in 
/Library/WebServer/Documents/system/database/drivers/pdo/pdo_driver.php:114 Stack trace: #0 
/Library/WebServer/Documents/system/database/drivers/pdo/pdo_driver.php(114): PDO->__construct('localhost:/tmp/...', 'root', '', Array) #1 /Library/WebServer/Documents/system/database/DB_driver.php(115): CI_DB_pdo_driver->db_pconnect() #2 
/Library/WebServer/Documents/system/database/DB.php(148): CI_DB_driver->initialize() #3 
/Library/WebServer/Documents/system/core/Loader.php(346): DB('', NULL) #4 
/Library/WebServer/Documents/system/core/Loader.php(1171): CI_Loader->database() #5 
/Library/WebServer/Documents/system/core/Loader.php(152): CI_Loader->_ci_autoloader() #6 
/Library/WebServer/Documents/system/core/Con in 
/Library/WebServer/Documents/system/database/drivers/pdo/pdo_driver.php on line 114 

我試圖從github上一個換出「pdo_driver.php」文件，按照這樣的： http://codeigniter.com/forums/viewthread/206124/ ......但只是產生其他錯誤，更何況是d如果可能的話，不要觸摸系統文件的新手。

此線程似乎也暗示需要被盜號了「pdo_driver.php」系統文件： CodeIgniter PDO database driver not working 這似乎很奇怪對我來說，雖然，（有人認爲）一個黑客對系統文件是需要在CI v.2.1.1中使PDO工作，是吧？

感謝您的任何建議，我可以嘗試。

Answer 1

感謝小白線http://codeigniter.com/forums/viewthread/180277/（InsiteFX的答案）..

我想通了，下面似乎工作（需要測試更多的是100％......但至少錯誤消息走了：

$db['local_dev']['hostname'] = 'mysql:host=127.0.0.1'; 

Answer 2

我不知道這是否對您有幫助，因爲您已經開始使用CI函數，但是我使用sqlite爲PDO創建了自己的庫，並自動加載它。我的需求很簡單，所以它的目的就在於此。

<?php if (! defined('BASEPATH')) exit('No direct script access allowed'); 

/** 
* CodeIgniter PDO Library 
* 
* 
* @author Michael Cruz 
* @version 1.0 
*/ 

class Sqlite_pdo 
{ 
    var $DB; 

    public function connect($path) { 
     try { 
      $this->DB = new PDO('sqlite:' . $path); 
     } 
     catch(PDOException $e) { 
      print "Error: " . $e->getMessage(); 
      die(); 
     } 
    } 

    public function simple_query($SQL) { 

     $results = $this->DB->query($SQL) 
      or die('SQL Error: ' . print_r($this->DB->errorInfo())); 

     return $results; 
    } 

    public function prepared_query($SQL, $bind = array()) { 

     $q = $this->DB->prepare($SQL) 
      or die('Prepare Error: ' . print_r($this->DB->errorInfo())); 

     $q->execute($bind) 
      or die('Execute Error: ' . print_r($this->DB->errorInfo())); 

     $q->setFetchMode(PDO::FETCH_BOTH);   

     return $q; 
    } 

    public function my_prepare($SQL) { 

     $q = $this->DB->prepare($SQL) 
      or die('Error: ' . print_r($this->DB->errorInfo()));    

     return $q; 
    } 

    public function my_execute($q, $bind) { 
     $q->execute($bind) 
      or die('Error: ' . print_r($this->DB->errorInfo())); 

     $q->setFetchMode(PDO::FETCH_BOTH); 

     return $q; 
    } 

    public function last_insert_id() { 
     return $this->DB->lastInsertId(); 
    } 
} 

/* End of file Sqlite_pdo.php */