This is a setting in php.ini, which will probably be at
/etc/php.ini
change it to 'On' and re-start the web server.
Is this what you mean? I have never heard of being off, certainly not as default.
/etc/php.ini
change it to 'On' and re-start the web server.
Is this what you mean? I have never heard of being off, certainly not as default.