gethostbyname()
gethostbyname() — Get the IPv4 address corresponding to a given Internet host name.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
gethostbyname(string $hostname): string
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $hostname | string | The host name. |
Return value
Returns the IPv4 address or a string containing the unmodified hostname on failure.
Example
A runnable snippet:
$ip = gethostbyname('www.example.com'); echo $ip;
See also
gethostbyaddr(), gethostbynamel(), inet_pton(), inet_ntop()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page gethostbyname() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.