original_string: public function quoteValue($str)
      {
          if (is_int($str) || is_float($str)) {
              return $str;
          }
  
          return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'";
      }
code: public function quoteValue($str)
      {
          if (is_int($str) || is_float($str)) {
              return $str;
          }
  
          return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'";
      }
code_tokens: public function quoteValue ( $ str ) { if ( is_int ( $ str ) || is_float ( $ str ) ) { return $ str ; } return "'" . addcslashes ( str_replace ( "'" , "''" , $ str ) , "\000\n\r\\\032" ) . "'" ; }
docstring: Quotes a string value for use in a query.
  
  @param string $str string to be quoted
  
  @return string the properly quoted string
  @see http://www.php.net/manual/en/function.PDO-quote.php
docstring_tokens: Quotes a string value for use in a query .