Hi,
> why not use nts on windows?
See and all the column Which version do I choose?
> Just to be sure, I modify all the php.ini.
NO, NO, NO, and always NO. You must modify only the ini file needed by YOUR scripts ie wampmanager->PHP->php.ini that correspond to wamp\bin\apache\apache2.4.9\bin\php.ini that is a symbolic link to wamp\bin\php\php5.5.12\phpForApache.ini
The other
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