public function getBindingCallback($key)
    {
        if (isset($this->binders[$key = str_replace('-', '_', $key)])) {
            return $this->binders[$key];
        }
    }
public function getBindingCallback($key)
    {
        if (isset($this->binders[$key = str_replace('-', '_', $key)])) {
            return $this->binders[$key];
        }
    }
public function getBindingCallback ( $ key ) { if ( isset ( $ this -> binders [ $ key = str_replace ( '-' , '_' , $ key ) ] ) ) { return $ this -> binders [ $ key ] ; } }
Get the binding callback for a given binding.

@param  string  $key
@return \Closure|null
Get the binding callback for a given binding .