gethostbyname

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8

Get the IPv4 address corresponding to a given Internet host name

<?php gethostbyname(string $hostname): string

composer/composer

<?php         if ($this->degradedMode && strpos($fileUrl, 'http://repo.packagist.org/') === 0) {


            $fileUrl = 'http://' . gethostbyname('repo.packagist.org') . substr($fileUrl, 20);

            $degradedPackagist = true;

        }

src/Composer/Util/RemoteFilesystem.php

reactphp/event-loop

<?php $ip = gethostbyname('www.google.com');

if (ip2long($ip) === false) {

    echo 'Unable to resolve hostname' . PHP_EOL;

    exit(1);

examples/14-http-client-async.php