ip_in_range() loop $ip overrides itself causing invalid results.

The $ip parameter is modified then reused in the loop of ips/ranges, thereby cause any subsequent iteration to fail on checking $ip.

I had to hack and change those instances of $ip to be renamed as $needle.

public function ip_in_range( $ip, $list )
{
	foreach ( $list as $range )
	{
		$range = array_map('trim', explode('-', $range) );
		if ( count( $range ) == 1 )
		{
			if ( (string)$ip === (string)$range[0] )
				return true;
		}
		else
		{
			$low = ip2long( $range[0] );
			$high = ip2long( $range[1] );
			$needle = ip2long( $ip );
			
			if ( $low === false || $high === false || $needle === false )
				continue;
			
			$low = (float)sprintf("%u",$low);
			$high = (float)sprintf("%u",$high);
			$needle = (float)sprintf("%u",$needle);
			
			if ( $needle >= $low && $needle <= $high )
				return true;
		}
	}
	
	return false;
}