(PECL tcpwrap >= 0.1.0)
tcpwrap_check — Performs a tcpwrap check
$daemon
, string $address
[, string $user
[, bool $nodns = FALSE
]] ) : bool
This function consults the /etc/hosts.allow and
/etc/hosts.deny files to check if access to service
daemon should be granted or denied for a client.
daemonThe service name.
addressThe client remote address. Can be either an IP address or a domain name.
userAn optional user name.
nodns
If address looks like domain name then DNS is
used to resolve it to IP address; set nodns to
TRUE to avoid this.
This function returns TRUE if access should be granted, FALSE otherwise.
Example #1 Deny all connections from localhost
If your /etc/hosts.deny file contains:
php: 127.0.0.1
And your code looks like:
<?php
if (!tcpwrap_check('php', $_SERVER['REMOTE_ADDR'])) {
die('You are not welcome here');
}
?>
For more details please consult hosts_access(3) man page.