[Twinny]

You could just create a class with a public function and join it to your weapon/weapons like

Class - Bankfunc

PHP Code:

public function getBalance(acct)
{
  doStuff();
  return temp.riches;
} 


Weapon

PHP Code:

function onCreated()
{
  this.join("Bankfunc");
  temp.result = Bankfunc::getBalance("Twinny"); //Note: Bankfunc:: was to get the idea through: not necessary unless multiple cases of getBalance()
  printf("Balance: $i", temp.result); //replace $ with percent sign
} 


You could also make a global object join the class:

System

PHP Code:

function onCreated()
{
  Bank = new TStaticVar();
  Bank.join("Bankfunc");
} 


Now you could simply do Bank.getBalance() from any script serverside. I don't find it ideal really but it works.