Resolve scope issues?

[Perad]

I have a custom validation library that I am making. I have hit a stumbling block. I need custom validation options. Unfortunately I cannot get the scope to work.

 

Check it out.

// User Class

$this->v->class = 'User';

$this->v->set_rule('username', 'required|maxlength.30|minlength.4|callback.valid_credentials');

 

// Validation Class
private function callback($function) {
global $this->class;

$this->class->$function();
}

 

To explain.

 

The user class extends the base class. The base class basically does

global $validation; $this->v = $validation

 

When the validation is run it explodes the rules into "function.value". So above The callback function will be executed with the function name.

 

What I need to do is put the user class into the same scope as the validation class. Then execute the function. I tried the code above. I got the following error.

Fatal error: Cannot re-assign $this in C:\xampp\htdocs\clientApp\system\classes\validation.class.php on line 59

 

I hope this makes sense. Do you have any ideas?