Sophie: php-manual-zh-5.2.4-1mdv2008.1 noarch

php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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><H1
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NAME="function.tcpwrap-check"
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>tcpwrap_check</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN233325"
></A
><P
>    (PECL)</P
>tcpwrap_check&nbsp;--&nbsp;Performs a tcpwrap check</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN233328"
></A
><H2
>说明</H2
>bool <B
CLASS="methodname"
>tcpwrap_check</B
> ( string daemon, string address [, string user [, bool nodns]] )<BR
></BR
><P
>&#13;   This function consults the <TT
CLASS="filename"
>/etc/hosts.allow</TT
> and 
   <TT
CLASS="filename"
>/etc/hosts.deny</TT
> files to check if access to service 
   <CODE
CLASS="parameter"
>daemon</CODE
> should be granted or denied for a client.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN233349"
></A
><H2
>参数</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>daemon</CODE
></DT
><DD
><P
>&#13;       The service name.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>address</CODE
></DT
><DD
><P
>&#13;       The client remote address. Can be either an IP address or a domain name.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>user</CODE
></DT
><DD
><P
>&#13;       An optional user name.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>nodns</CODE
></DT
><DD
><P
>&#13;       If <CODE
CLASS="parameter"
>address</CODE
> looks like domain name then DNS is 
       used to resolve it to IP address; set <CODE
CLASS="parameter"
>nodns</CODE
> to 
       <TT
CLASS="constant"
><B
>TRUE</B
></TT
> to avoid this.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN233376"
></A
><H2
>返回值</H2
><P
>&#13;   This function returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
> if access should be granted, <TT
CLASS="constant"
><B
>FALSE</B
></TT
> otherwise.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN233381"
></A
><H2
>范例</H2
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><DIV
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><A
NAME="AEN233383"
></A
><P
><B
>例 1. Deny all connections from localhost</B
></P
><P
>&#13;    If your /etc/hosts.deny file contains:
   </P
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><TD
><PRE
CLASS="screen"
>php: 127.0.0.1</PRE
></TD
></TR
></TABLE
><P
>&#13;    And your code looks like:
   </P
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">if (!</font><font color="#0000BB">tcpwrap_check</font><font color="#007700">(</font><font color="#DD0000">'php'</font><font color="#007700">, </font><font color="#0000BB">$_SERVER</font><font color="#007700">[</font><font color="#DD0000">'REMOTE_ADDR'</font><font color="#007700">])) {<br />&nbsp;&nbsp;die(</font><font color="#DD0000">'You are not welcome here'</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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></TD
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></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN233389"
></A
><H2
>参见</H2
><P
>&#13;   For more details please consult hosts_access(3) man page.
  </P
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