How to install php extensions?

[vincentp]

Hello,

I'm new on OSX and I installed xampp. I need some php extensions (json, simplexml, mcrypt and curl).
I tried to include them in php.ini, but they are not found in :
xampp/xamppfiles/lib/php/php5/extensions/no-debug-non-zts-20060613/

How to install extensions with xampp? Could you give me the way to do it?

Thanks !
Vincent

[jmdirc]

Check out your phpinfo()

you will see they are all enabled and supported by default