I'm stupid!!! I was a mistake.
On the php.ini, it seems that there are two times the samevalue (short_open_tag)
here at the begging of the file
; session.hash_bits_per_character
; Default Value: 4
; Development Value: 5
; Production Value: 5
; short_open_tag = Off
; Default Value: On
; Development Value: Off
; Production Value: Off
and further
;;;;;;;;;;;;;;;;;;;;
; Language Options ;
;;;;;;;;;;;;;;;;;;;;
; Enable the PHP scripting language engine under Apache.
; http://www.php.net/manual/en/apache.configuration.php#ini.engine(http://www.php.net/manual/en/apache.configuration.php#ini.engine)
engine = On
; This directive determines whether or not PHP will recognize code between
; <? and ?> tags as PHP source which should be processed as such. It's been
; recommended for several years that you not use the short tag "short cut" and
; instead to use the full <?php and ?> tag combination. With the wide spread use
; of XML and use of these tags by other languages, the server can become easily
; confused and end up parsing the wrong code in the wrong context. But because
; this short cut has been a feature for such a long time, it's currently still
; supported for backwards compatibility, but we recommend you don't use them.
; Default Value: On
; Development Value: Off
; Production Value: Off
; http://www.php.net/manual/en/ini.core.php#ini.short-open-tag(http://www.php.net/manual/en/ini.core.php#ini.short-open-tag)
short_open_tag = On
; Allow ASP-style tags.
; http://www.php.net/manual/en/ini.core.php#ini.asp-tags(http://www.php.net/manual/en/ini.core.php#ini.asp-tags)
asp_tags = Off
; The number of significant digits displayed in floating point numbers.
; http://www.php.net/manual/en/ini.core.php#ini.precision(http://www.php.net/manual/en/ini.core.php#ini.precision)
precision = 14
; Enforce year 2000 compliance (will cause problems with non-compliant browsers)
; http://www.php.net/manual/en/ini.core.php#ini.y2k-compliance(http://www.php.net/manual/en/ini.core.php#ini.y2k-compliance)
y2k_compliance = On
I made the change in the wrong place!
Problem solved