Alvaro Martinez wrote:
I have written this code:
class db{ var $_miInstancia;
function db (){ // funcion que se conecta con la BBDD static $miInstancia; $this->_miInstancia=&$miInstancia;
$result = @mysql_pconnect("inforalv", "discoteca", "password"); if (!$result) return false; if ([EMAIL PROTECTED]("discoteca")) return false; }
function getInstancia(){ if (!isset($this)) $_miInstancia=new db(); return $_miInstancia; } }
This is a Singleton Pattern, but it doesnt work. I want to obtain only one instance of db class but when I do this...:
$conexiondb=db::getInstancia(); $conexiondb=db::getInstancia();
In the two calls I get a new db object. Could you please tell me if there is anything wrong?
two mistakes - you need to use &, and the static var must be in getInstancia()
function &getInstancia(){
static $miInstancia;
if (!get_class($miInstancia) == 'db') {
$miInstancia = &new db();
}
return $miInstancia;
}$conexiondb = &db::getInstancia();
Regards, Greg -- http://www.phpdoc.org phpDocumentor
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