CVIII. TCP Wrappers Functions介绍The TCP wrappers provides a classical unix mechanism which has been designed to check if the remote client is able to connect from the given IP address. 安装Tcpwrap is currently available through PECL http://pecl.php.net/package/tcpwrap. If PEAR is available on your *nix-like system you can use the pear installer to install the tcpwrap extension, by the following command: pear -v install tcpwrap. You can always download the tar.gz package and install tcpwrap by hand:
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