How can I use array_walk with a class method?

[RoadKingHD]

Here is what I am trying to do:

class dataConnection
{

/**
*  var definitions & constructor
*  other methods
*/

//then 

 function dbDataReady(&$data, $key = "")
{

    $data = trim($data);

    if (!get_magic_quotes_gpc())
   {
        if (function_exists("mysql_escape_string"))
        {

                $data = mysql_escape_string($data);

          } else {

                $data = addslashes($data);

          }

    } 
        return $data;

}


}

  /**
  * the above class is actually included via require_once()
  * and then instantiated (if not already) as this require / include
  * occurs on each page. I instanciate the calss like this:
  *
  * if(!is_object($_SESSION["dataSource"]))
  * {
  *    

  *     $_SESSION["dataSource"] = &new dataConnection;
  *     

  *      $_SESSION["dataConn"] = $_SESSION["dataSource"]->dbConnect();
  *
  *  } else {
  * 
  *      $_SESSION["dataConn"] = $_SESSION["dataSource"]->dbConnect();
  *
  *  }
  *
  * Now I want to use the method dbDataReady() with
  * array_walk()
  */

array_walk($_POST, "don know what to put here?");

   /*
   * when the method is a local function, all is golden
   * array_walk($_POST, "dbDataReady");
   * but as a method, I can't seem to find a way to call the
   * class and method.
   * things like array_walk($_POST, '$_SESSION["dataSource"]->dbDataReady');
   * will not work.
   */

What am I missing? Any ideas?

Kevin

[daarius]

first of all, you dont need to return the $data in your function. that wouldnt do anything in your example.

try these:

array_walk($_POST, 'dataConnection->dbDataReady');

or

array_walk($_POST, 'dataConnection::dbDataReady');

now your $_POST should be cured.

[RoadKingHD]

Hey daarius,

Thanks for the reply.

I didn't write this function (dbDataReady) specifically for use with array_walk(), therefore the return $data is for use when calling dbDataReady() directly:

$someValue = dbDataReady($someValue);

The return has no effect on the results of array_walk().

try these:

array_walk($_POST, 'dataConnection->dbDataReady');

or

array_walk($_POST, 'dataConnection::dbDataReady');

now your $_POST should be cured.

These solutions will not work.

dataConnection is instanciated previously and the object asigned to $_SESSION["dataSource"]:

$dataSource = new dataConnection;

$_SESSION["dataSource"] = $dataSource;

//Which I suppose could be simply:


$_SESSION["dataSource"] = new dataConnection;

in any case the method of the calss has to be called like:

$_SESSION["dataSource"]->dbDataReady();

which is not a problem except when I try to use it with array_walk().

i.e.

array_walk($POST, '$SESSION["dataSource"]->dbDataReady');

array_walk($POST, "\$SESSION[\"dataSource\"]->dbDataReady");

and a host of other attempts will all produce the error:

Warning: Unable to call dataConnection::dbDataReady() - function does not exist

or

Warning: Unable to call $_POST["dataSource"]->dbDataReady() - function does not exist

or a variation there of based on the arg to array_walk().

It would seem that no matter how I try supply the argument name for the method it is interpreted literally or as not as a string representing the name of the method. If that makes sense.

So, how can I supply array_walk() with the function (class method) name in a way that it will be parsed?

Kevin