original_string: protected function getExpression($equation)
      {
          if ($this->fixedVerifyCode !== null) {
              return $this->fixedVerifyCode;
          }
  		
  		return $equation['first'] ."~". $equation['operator'] ."~". $equation['second'] ."~=";
      }
code: protected function getExpression($equation)
      {
          if ($this->fixedVerifyCode !== null) {
              return $this->fixedVerifyCode;
          }
  		
  		return $equation['first'] ."~". $equation['operator'] ."~". $equation['second'] ."~=";
      }
code_tokens: protected function getExpression ( $ equation ) { if ( $ this -> fixedVerifyCode !== null ) { return $ this -> fixedVerifyCode ; } return $ equation [ 'first' ] . "~" . $ equation [ 'operator' ] . "~" . $ equation [ 'second' ] . "~=" ; }
docstring: Get expresion formula .
  @param array $equation
  @return string
docstring_tokens: Get expresion formula .