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

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>func_num_args</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="PHP 手册"
HREF="index.html"><LINK
REL="UP"
TITLE="Function Handling Functions"
HREF="ref.funchand.html"><LINK
REL="PREVIOUS"
TITLE="func_get_args"
HREF="function.func-get-args.html"><LINK
REL="NEXT"
TITLE="function_exists"
HREF="function.function-exists.html"><META
HTTP-EQUIV="Content-type"
CONTENT="text/html; charset=UTF-8"></HEAD
><BODY
CLASS="refentry"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>PHP 手册</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="function.func-get-args.html"
ACCESSKEY="P"
>上一页</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.function-exists.html"
ACCESSKEY="N"
>下一页</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.func-num-args"
></A
>func_num_args</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN62864"
></A
><P
>    (PHP 4, PHP 5)</P
>func_num_args&nbsp;--&nbsp;Returns the number of arguments passed to the function</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62867"
></A
><H2
>说明</H2
>int <B
CLASS="methodname"
>func_num_args</B
> ( void  )<BR
></BR
><P
>&#13;   Gets the number of arguments passed to the function.
  </P
><P
>&#13;   This function may be used in conjunction with 
   <A
HREF="function.func-get-arg.html"
><B
CLASS="function"
>func_get_arg()</B
></A
> and <A
HREF="function.func-get-args.html"
><B
CLASS="function"
>func_get_args()</B
></A
>
   to allow user-defined functions to accept variable-length argument lists.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62877"
></A
><H2
>返回值</H2
><P
>&#13;   Returns the number of arguments passed into the current user-defined
   function.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62880"
></A
><H2
>错误／异常</H2
><P
>&#13;   Generates a warning if called from outside of a user-defined function.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62883"
></A
><H2
>范例</H2
><P
>&#13;   <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN62886"
></A
><P
><B
>例 1. <B
CLASS="function"
>func_num_args()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">function </font><font color="#0000BB">foo</font><font color="#007700">()<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$numargs </font><font color="#007700">= </font><font color="#0000BB">func_num_args</font><font color="#007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"Number of arguments: $numargs</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">foo</font><font color="#007700">(</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">);&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Prints 'Number of arguments: 3'<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62890"
></A
><H2
>注释</H2
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>Because this function depends on the
current scope to determine parameter details, it cannot be used as a
function parameter. If you must pass this value, assign the results to a
variable, and pass the variable.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN62894"
></A
><H2
>参见</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.func-get-arg.html"
><B
CLASS="function"
>func_get_arg()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.func-get-args.html"
><B
CLASS="function"
>func_get_args()</B
></A
></TD
></TR
></TBODY
></TABLE
><P
></P
>
  </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.func-get-args.html"
ACCESSKEY="P"
>上一页</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>起始页</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.function-exists.html"
ACCESSKEY="N"
>下一页</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>func_get_args</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.funchand.html"
ACCESSKEY="U"
>上一级</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>function_exists</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>