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Example code of bluelibraries/dns

Informations about the package dns

DNS

PHP-7.4 PHP-8.0 PHP-8.1 PHP-8.2 PHPUnit codecov

Use certain DNS handler for DNS interrogation

FOR PHP >= 7.4 ONLY

For older PHP version we strongly suggest bluelibraries/php5-dns

Demo

Example:

Install via composer

This package contains 4 types which can be used for DNS interrogations

  1. DnsGetRecord based on dns_get_record PHP function
  2. Dig based on dig shell command (better than dns_get_record and still secured)
  3. UDP based on raw DNS calls using UDP/socket - useful for short answered queries as UDP answers might be limited to 512 bytes
  4. TCP based on raw DNS calls using TCP/socket - this the best and is set as default handler

Dns handlers comparison

Feature DNS_GET_RECORD DIG UDP TCP
Force timeout limit NO YES YES YES
Detect more record types
that are defined in PHP		 NO YES YES YES
Use custom nameserver NO YES YES YES
Handle large responses YES YES NO YES
No need for extra modules/packages for running YES NO YES YES

Dns handlers custom settings

Similar for UDP and DIG

DnsGetRecord - this handler has a limited number of settings

Retrieve records examples, and more...

Retrieve records using dns_get_record

Retrieve records using dig

Retrieve records using UDP

Retrieve records using TCP

Retrieve TXT records

Retrieve A (address) records

Retrieve ALL records

All versions of dns with dependencies

PHP Build Version
Package Version
Requires php Version >=7.4
ext-json Version *
ext-sockets Version *
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