php - function rightshift($num, $bits) is not working in server -

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function rightshift($num, $bits) {  return bcdiv($num, bcpow('2', $bits));  }  echo rightshift(1024,8));

in php working in local system not working in server.

i'm guessing local system windows, server linux?

the windows build of php has built-in support, while linux builds need compiled option. see http://www.php.net/manual/en/bc.installation.php. doesn't seem enabled default.

how enable depend on hosting provider. if have full access server, recompile php flag set , you'll fine. here's page targeted @ dreamhost, guides should apply server environment you're allowed install own php: http://wiki.dreamhost.com/bcmath


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