Zymba Documentation

DNS

object @DNS() {
	exists(string $host, string $type): bool {}
	isValidDomain(string $domain): bool {}
	isValidHost(string $host): bool {}
	isValidIP(string $ip): bool {}
	lookup(string $domain): string {}
	resolve(string $domain, string $type): object {}
	reverse(string $ip): string {}
}

Static DNS related functions.

Functions

Determines whether a DNS record of a specific type exists for a host (domain name or IP address).

@DNS.exists(string $host, string $type): bool

Parameters

Name	Type	Value	Default
host	string		""
type	string		"any"

Returns

Type	Value
bool

Determines whether a domain name is valid.

@DNS.isValidDomain(string $domain): bool

Parameters

Name	Type	Value	Default
domain	string		""

Returns

Type	Value
bool

Determines whether a host (domain name or IP address) is valid.

@DNS.isValidHost(string $host): bool

Parameters

Name	Type	Value	Default
host	string		""

Returns

Type	Value
bool

Determines whether an IP address is valid.

@DNS.isValidIP(string $ip): bool

Parameters

Name	Type	Value	Default
ip	string		"0.0.0.0"

Returns

Type	Value
bool

Resolves a domain name and returns its IP address.

@DNS.lookup(string $domain): string

Parameters

Name	Type	Value	Default
domain	string		""

Returns

Type	Value
string
null

Resolves a domain name into the DNS records of a specific type.

@DNS.resolve(string $domain, string $type): object

Parameters

Name	Type	Value	Default
domain	string		""
type	string		"any"

Returns

Type	Value
object	[["host": ..., "class": ..., "type": ..., "ttl": ...], ...]
null

Reverse resolves an IP address and returns its domain name.

@DNS.reverse(string $ip): string

Parameters

Name	Type	Value	Default
ip	string		"0.0.0.0"

Returns

Type	Value
string
null