original_string: public function get_credit($key = 0)
  	{
  		$credits = $this->get_credits();
  		if (isset($credits[$key]))
  		{
  			return $credits[$key];
  		}
  		else
  		{
  			return null;
  		}
  	}
code: public function get_credit($key = 0)
  	{
  		$credits = $this->get_credits();
  		if (isset($credits[$key]))
  		{
  			return $credits[$key];
  		}
  		else
  		{
  			return null;
  		}
  	}
code_tokens: public function get_credit ( $ key = 0 ) { $ credits = $ this -> get_credits ( ) ; if ( isset ( $ credits [ $ key ] ) ) { return $ credits [ $ key ] ; } else { return null ; } }
docstring: Get a single credit
  
  @param int $key
  @return SimplePie_Credit|null
docstring_tokens: Get a single credit