php pdo connection scope
- by Scarface
Hey guys I have a connection class I found for pdo. I am calling the connection method on the page that the file is included on. The problem is that within functions the $conn variable is not defined even though I stated the method was public (bare with me I am very new to OOP), and I was wondering if anyone had an elegant solution other then using global in every function. Any suggestions are greatly appreciated.
CONNECTION
class PDOConnectionFactory{
// receives the connection
public $con = null;
// swich database?
public $dbType = "mysql";
// connection parameters
// when it will not be necessary leaves blank only with the double quotations marks ""
public $host = "localhost";
public $user = "user";
public $senha = "password";
public $db = "database";
// arrow the persistence of the connection
public $persistent = false;
// new PDOConnectionFactory( true ) <--- persistent connection
// new PDOConnectionFactory() <--- no persistent connection
public function PDOConnectionFactory( $persistent=false ){
// it verifies the persistence of the connection
if( $persistent != false){ $this->persistent = true; }
}
public function getConnection(){
try{
// it carries through the connection
$this->con = new PDO($this->dbType.":host=".$this->host.";dbname=".$this->db, $this->user, $this->senha,
array( PDO::ATTR_PERSISTENT => $this->persistent ) );
// carried through successfully, it returns connected
return $this->con;
// in case that an error occurs, it returns the error;
}catch ( PDOException $ex ){ echo "We are currently experiencing technical difficulties. We have a bunch of monkies working really hard to fix the problem. Check back soon: ".$ex->getMessage(); }
}
// close connection
public function Close(){
if( $this->con != null )
$this->con = null;
}
}
PAGE USED ON
include("includes/connection.php");
$db = new PDOConnectionFactory();
$conn = $db->getConnection();
function test(){
try{
$sql = 'SELECT * FROM topic';
$stmt = $conn->prepare($sql);
$result=$stmt->execute();
}
catch(PDOException $e){ echo $e->getMessage(); }
}
test();
