Validators

Ip Validator

Zend\Validator\Ip allows you to validate if a given value is an IP address. It supports the IPv4, IPv6, and IPvFuture definitions.

Supported options

The following options are supported for Zend\Validator\Ip:

• allowipv4: Defines if the validator allows IPv4 addresses. This option defaults to true.
• allowipv6: Defines if the validator allows IPv6 addresses. This option defaults to true.
• allowipvfuture: Defines if the validator allows IPvFuture addresses. This option defaults to false.
• allowliteral: Defines if the validator allows IPv6 or IPvFuture with URI literal style (the IP surrounded by brackets). This option defaults to true.

Basic usage

$validator = new Zend\Validator\Ip();

if ($validator->isValid($ip)) {
    // ip appears to be valid
} else {
    // ip is invalid; print the reasons
}

Invalid IP addresses

Keep in mind that Zend\Validator\Ip only validates IP addresses. Addresses like 'mydomain.com' or '192.168.50.1/index.html' are not valid IP addresses. They are either hostnames or valid URLs but not IP addresses.

IPv6/IPvFuture validation

Zend\Validator\Ip validates IPv6/IPvFuture addresses using a regex. The reason is that the filters and methods from PHP itself don't follow the RFC. Many other available classes also don't follow it.

Validate IPv4 or IPV6 alone

Sometimes it's useful to validate only one of the supported formats; e.g., when your network only supports IPv4. In this case it would be useless to allow IPv6 within this validator.

To limit Zend\Validator\Ip to one protocol, you can set the options allowipv4 or allowipv6 to false. You can do this either by giving the option to the constructor or by using setOptions() afterwards.

$validator = new Zend\Validator\Ip(['allowipv6' => false]);

if ($validator->isValid($ip)) {
    // ip appears to be valid ipv4 address
} else {
    // ip is not an ipv4 address
}

Default behaviour

The default behaviour which Zend\Validator\Ip follows is to allow both standards.