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<?php
class EchoParam
{
  function EchoValue($a,$b)
  {
    echo "value = ".$a*$b."\n";    
  }

  function EchoValues($a,$b)
  {
    echo "jjjj";
  }
}
class ClsFactory
{
  public static function CreateNoCheckModel($classname)
  {
    return new $classname;
  }
}
class Vmware
{  
  public function doProx($method, $args)  
  {
    $model = ClsFactory::CreateNoCheckModel("EchoParam");
    echo call_user_func_array ( array ($model, $method), $args);
  }
  public function __call($method, $args)
  {  var_dump($method);
    return $this->doProx($method, $args);
  }
}
$a = 1;
$b = 88;
$mwallobj = new Vmware();
$mwallobj->EchoValue($a, $b);
$mwallobj->EchoValues($a, $b);
?>

[root@vm0000055 ~]# php call_user_func_array.php
string(9) "EchoValue"
value = 88
string(10) "EchoValues"
jjjj