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POPDO: Why does this cause an error?
primarykey
Id
12223911
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AcceptedAnswerId
12232694
AnswerCount
2
ClosedDate
CommentCount
9
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CreationDate
2012-09-01T00:20:02.903
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2012-09-02T01:12:41.980
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2012-09-01T02:30:19.010
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Score
1
ViewCount
184
LastEditorDisplayName
text
Body
I dont understand why appear this error when create a object like this: The error is in index.php in this line: <pre><code>$dbPerfiles = new DB_Functions(); </code></pre> And the error is this: <pre><code>PDO Connection error: invalid data source name </code></pre> config.php <pre><code><?php define ("DB_USER","root"); define ("DB_PASS","root"); define ("DNS","mysql:host=localhost;dbname=example"); ?> </code></pre> DB_Connect.php <pre><code><?php require_once 'config.php'; class DB_Connect { private static $_instance; //Connecting to database public function &pdo_connect() { if(!self::$_instance) { try{ self::$_instance = new PDO(DNS,DB_USER, DB_PASS); self::$_instance->setAttribute(PDO::ATTR_PERSISTENT, true); self::$_instance->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); } catch (PDOException $ex) { die("PDO Connection error: ".$ex->getMessage()." "); } } return self::$_instance; } private function __construct() { } private function __clone() { } } ?> </code></pre> DB_Functions.php <pre><code><?php session_start(); require_once 'DB_Connect.php'; class DB_Functions extends DB_Connect{ private $dbConnect = ""; public function __construct() { $this->dbConnect = $this->pdo_connect(); } public function __destruct() { $this->dbConnect = null; } public function getDetails() { try { //sql statement } catch (PDOException $e) { echo "Error: ".$e->getMessage()." "; return false; } } } ?> </code></pre> index.php <pre><code><?php session_start(); $max_time = 1800; $current = time(); if(!isset($_SESSION['clientmac']['un']) ) { $_SESSION['clientmac']['un'] == ""; header('Location: index.php'); } else { if (!isset($_SESSION['timeLogin'])){ $_SESSION['clientmac']['tl'] = time(); } else { $session_life = $current - $_SESSION['clientmac']['tl']; if ($session_life > $max_time) { header('Location: include/logout.php'); } else { $_SESSION['clientmac']['tl'] = time(); } } require_once 'include/DB_Functions.php'; $dbPerfiles = new DB_Functions(); //With this line shows the error //code to connect to getDetails() function in DB_Functions.php and //retrieve some data. ?> <!doctype html> <html lang=en>  </html> <?php } ?> </code></pre> I want connect to DB_Functions and connect with getDetails() function or other function in this file and retrieve data.. only that! I hope I have explained. Regards!!
Tags
<php><pdo>
Title
PDO: Why does this cause an error?
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
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PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USSoldierCorp
UserOwnerUserId
1. USSoldierCorp
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
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 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

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