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
><A
NAME="function.syslog"
></A
>syslog</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN150000"
></A
><P
>    (PHP 3, PHP 4, PHP 5)</P
>syslog&nbsp;--&nbsp;Generate a system log message</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN150003"
></A
><H2
>Description</H2
>bool <B
CLASS="methodname"
>syslog</B
> ( int priority, string message )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>syslog()</B
> generates a log message that will be
     distributed by the system logger.
     <CODE
CLASS="parameter"
>priority</CODE
> is a combination of the facility
     and the level, values for which are given in the next section.
     The remaining argument is the message to send, except that the
     two characters <TT
CLASS="literal"
>%m</TT
> will be replaced by the
     error message string (strerror) corresponding to the present
     value of <SPAN
CLASS="errortype"
>errno</SPAN
>.
    </P
><P
>&#13;     <DIV
CLASS="table"
><A
NAME="AEN150020"
></A
><P
><B
>表 1. <B
CLASS="function"
>syslog()</B
> Priorities (in descending order)</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Constant</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
>LOG_EMERG</TD
><TD
>system is unusable</TD
></TR
><TR
><TD
>LOG_ALERT</TD
><TD
>action must be taken immediately</TD
></TR
><TR
><TD
>LOG_CRIT</TD
><TD
>critical conditions</TD
></TR
><TR
><TD
>LOG_ERR</TD
><TD
>error conditions</TD
></TR
><TR
><TD
>LOG_WARNING</TD
><TD
>warning conditions</TD
></TR
><TR
><TD
>LOG_NOTICE</TD
><TD
>normal, but significant, condition</TD
></TR
><TR
><TD
>LOG_INFO</TD
><TD
>informational message</TD
></TR
><TR
><TD
>LOG_DEBUG</TD
><TD
>debug-level message</TD
></TR
></TBODY
></TABLE
></DIV
>
    </P
><P
>&#13;     <TABLE
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN150054"
></A
><P
><B
>例 1. Using <B
CLASS="function"
>syslog()</B
></B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />define_syslog_variables</font><font color="#007700">();<br /></font><font color="#FF8000">// open syslog, include the process ID and also send<br />// the log to standard error, and use a user defined<br />// logging mechanism<br /></font><font color="#0000BB">openlog</font><font color="#007700">(</font><font color="#DD0000">"myScriptLog"</font><font color="#007700">, </font><font color="#0000BB">LOG_PID </font><font color="#007700">| </font><font color="#0000BB">LOG_PERROR</font><font color="#007700">, </font><font color="#0000BB">LOG_LOCAL0</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// some code<br /><br /></font><font color="#007700">if (</font><font color="#0000BB">authorized_client</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// do something<br /></font><font color="#007700">} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// unauthorized client!<br />&nbsp;&nbsp;&nbsp;&nbsp;// log the attempt<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$access </font><font color="#007700">= </font><font color="#0000BB">date</font><font color="#007700">(</font><font color="#DD0000">"Y/m/d H:i:s"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">syslog</font><font color="#007700">(</font><font color="#0000BB">LOG_WARNING</font><font color="#007700">, </font><font color="#DD0000">"Unauthorized client: $access </font><font color="#007700">{</font><font color="#DD0000">$_SERVER</font><font color="#007700">[</font><font color="#DD0000">'REMOTE_ADDR'</font><font color="#007700">]}</font><font color="#DD0000"> (</font><font color="#007700">{</font><font color="#DD0000">$_SERVER</font><font color="#007700">[</font><font color="#DD0000">'HTTP_USER_AGENT'</font><font color="#007700">]}</font><font color="#DD0000">)"</font><font color="#007700">);<br />}<br /><br /></font><font color="#0000BB">closelog</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
     For information on setting up a user defined log handler, see the
     <SPAN
CLASS="citerefentry"
><SPAN
CLASS="refentrytitle"
>syslog.conf</SPAN
>(5)</SPAN
> Unix manual page.  More
     information on the syslog facilities and option can be found in the man
     pages for <SPAN
CLASS="citerefentry"
><SPAN
CLASS="refentrytitle"
>syslog</SPAN
>(3)</SPAN
> on Unix machines.
    </P
><P
>&#13;     On Windows NT, the syslog service is emulated using the Event
     Log.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      Use of <TT
CLASS="literal"
>LOG_LOCAL0</TT
> through
      <TT
CLASS="literal"
>LOG_LOCAL7</TT
> for the <CODE
CLASS="parameter"
>facility</CODE
>
      parameter of <A
HREF="function.openlog.html"
><B
CLASS="function"
>openlog()</B
></A
> is not available
      in Windows.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also <A
HREF="function.define-syslog-variables.html"
><B
CLASS="function"
>define_syslog_variables()</B
></A
>,
     <A
HREF="function.openlog.html"
><B
CLASS="function"
>openlog()</B
></A
> and
     <A
HREF="function.closelog.html"
><B
CLASS="function"
>closelog()</B
></A
>.
    </P
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