Re: php and var statics

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 (!@mysql_select_db("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