src/classes/CCModel.php
public function __isset( $key ) 
	{
		return ( array_key_exists( $key, $this->_data_store ) || method_exists( $this, '_get_modifier_'.$key ) ) ? true : false;
	}
public function __isset( $key ) 
	{
		return ( array_key_exists( $key, $this->_data_store ) || method_exists( $this, '_get_modifier_'.$key ) ) ? true : false;
	}
public function __isset ( $ key ) { return ( array_key_exists ( $ key , $ this -> _data_store ) || method_exists ( $ this , '_get_modifier_' . $ key ) ) ? true : false ; }
Check if model data isset
This also checks if a get modifier function exists which will also count as ture.

@param $key
@return bool
Check if model data isset This also checks if a get modifier function exists which will also count as ture .