(PHP 4, PHP 5, PHP 7)
gethostbynamel — Get a list of IPv4 addresses corresponding to a given Internet host name
gethostbynamel ( string $hostname ) : array
 Returns a list of IPv4 addresses to which the Internet host specified by hostname resolves. 
hostname
The host name.
 Returns an array of IPv4 addresses or false if hostname could not be resolved. 
Example #1 gethostbynamel() example
<?php
$hosts = gethostbynamel('www.example.com');
print_r($hosts);
?> The above example will output:
Array
(
    [0] => 192.0.34.166
)
named(8) manual page
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Licensed under the Creative Commons Attribution License v3.0 or later.
    https://www.php.net/manual/en/function.gethostbynamel.php