function role_export_generate_id in Role Export 7

Same name and namespace in other branches

1. 6 role_export.module \role_export_generate_id()

Generates a numeric id from a machine name.

2 calls to role_export_generate_id()

role_export_user_role_insert in ./role_export.module

Implements hook_user_role_insert().

role_export_user_role_update in ./role_export.module

Implements hook_user_role_update().

File

./role_export.module, line 200

Role Export's primary module file.

Code

function role_export_generate_id($mname) {
  $hash = md5($mname);

  // Use the last 7 hex digits from the hash. We cannot use 8 hex digits (32
  // bit) because PHP does not support unsigned integers. The size of an
  // integer is platform dependent (PHP_INT_SIZE) and can be only 32 bit. So we
  // only have a range of 31 bit available for positive integers. We just use 7
  // hex digits (28 bit here) for simplicity, which should also be good enough.
  $shorter = substr($hash, -7);
  $number = hexdec($shorter);
  return (int) $number;
}