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Code: Alles auswählen

function encode_ip($dotquad_ip)
{
	if (strpos($dotquad_ip, ':') !== false && strpos($dotquad_ip, '.') === false)
	{
		// ipv6 - "::1" => "0000000000000000000000000001"
		$new_ip = '';
		if(strstr($dotquad_ip,"::" ))
		{
			$ip_sep = array();
			$e = explode(":", $dotquad_ip);
			$s = 8-count($e);
			foreach($e as $value){
				if ($value == '')
				{
					for($i = 0; $i <= $s; $i++) $ip_sep[] = 0;
				}
				else
				{
					$ip_sep[] = $value;
				}
			}
		}
		else
		{
			$ip_sep = explode(':', $dotquad_ip);
		}
		for ($i = 0; $i <= 7; $i++) $new_ip .= str_pad($ip_sep[$i], 4, '0', STR_PAD_LEFT);
		return $new_ip;
	}
	else
	{
		// ipv4 - "127.0.0.1" => "7F000001"
		$ip_sep = explode('.', $dotquad_ip);
		return sprintf('%02x%02x%02x%02x', $ip_sep[0], $ip_sep[1], $ip_sep[2], $ip_sep[3]);
	}
}

function decode_ip($int_ip)
{
	if (strlen($int_ip) == 32)
	{
		// ipv6 - "0000000000000000000000000001" => "::1"
		$hexipbang = array();
		$e = str_split($int_ip, 4);
		foreach($e as $key => $value)
		{
			$value = ltrim($value, '0');
			$hexipbang[] = $value ? $value : '0';
		}
		$new_ip = implode(':', $hexipbang);
		if (preg_match_all('/:(0:)+/s', $new_ip, $zeros, PREG_PATTERN_ORDER))
		{
			rsort($zeros[0], SORT_STRING);
			$new_ip = str_replace($zeros[0][0], '::', $new_ip);
		}
		return $new_ip;
	}
	else
	{
		// ipv4 - "7F000001" => "127.0.0.1"
		$hexipbang = explode('.', chunk_split($int_ip, 2, '.'));
		return hexdec($hexipbang[0]). '.' . hexdec($hexipbang[1]) . '.' . hexdec($hexipbang[2]) . '.' . hexdec($hexipbang[3]);
	}
}

Code: Alles auswählen

      $e = str_split($int_ip, 4);

Code: Alles auswählen

      $e = explode(':', chunk_split($int_ip, 4, ':'));