tcpwrap_check

(PECL tcpwrap >= 0.1.0)

tcpwrap_check — Performs a tcpwrap check

说明

tcpwrap_check ( string $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.

参数

daemon

The service name.

address

The client remote address. Can be either an IP address or a domain name.

user

An 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.

返回值

This function returns TRUE if access should be granted, FALSE otherwise.

范例

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');
}
?>

参见

For more details please consult hosts_access(3) man page.