Net_IPv4::ip2double() -- Converts an IP address to a PHP double.
Description
Converts an IP address to a PHP double - for example "192.168.1.0" to "3232235776". A double is,
in contrast to ip2long's integer, not signed and may be
more comfortable when presented to the user. It can still be reconverted with PHP's long2ip().
Note
This function can be called
statically.