Description:
------------
This is not so much a bug report, but more of a remark - I just didn't know where to put it.

When serializing strings PHP includes double quotes. Seeing as it also stores the size, aren't quotes just a waste of space? I can't see them serving any purpose - any parser will merely read in the size and then read that many characters.

Reproduce code:
---------------
$str = serialize( array(
"company" => "101_e",
"country => "101_3",
) );

echo( $str );


Expected result:
----------------
a:2:{s:7:company;s:5:101_e;s:7:country;s:5:101_3;}

Actual result:
--------------
a:2:{s:7:"company";s:5:"101_e";s:7:"country";s:5:"101_3";}