See "Using Oracle Locator for Spatial Mapping" p.214 of The Underground PHP and Oracle Manual
Version 5.3.2 is very old and you should upgrade to at least PHP 5.3.27 for stability & security reasons.
Preferably you would upgrade to PHP 5.4 or 5.5 because 5.3 is at end of life.
I have solve the problem.
Thank you CJ for suggest, I've upgrade to PHP 5.4 and read manual page 214, I've learnt something more,
but the poblem still remains so I tried to follow another way and then I find it.
before I run this code
alter session set nls_numeric_characters ='.,'
4326) as geom
from table a,
a.id = 1