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

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><H1
><A
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>debug_backtrace</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN47304"
></A
><P
>    (PHP 4 &#62;= 4.3.0, PHP 5)</P
>debug_backtrace&nbsp;--&nbsp;Generates a backtrace</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN47307"
></A
><H2
>说明</H2
>array <B
CLASS="methodname"
>debug_backtrace</B
> ( void  )<BR
></BR
><P
>&#13;   <B
CLASS="function"
>debug_backtrace()</B
> generates a PHP backtrace.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN47315"
></A
><H2
>返回值</H2
><P
>&#13;   Returns an associative <A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
>. The possible returned elements
   are as follows:
  </P
><P
>&#13;   <DIV
CLASS="table"
><A
NAME="AEN47320"
></A
><P
><B
>表 1. Possible returned elements from <B
CLASS="function"
>debug_backtrace()</B
></B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Type</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
>function</TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
>&#13;        The current function name.  See also
        <A
HREF="language.constants.predefined.html"
>__FUNCTION__</A
>.
       </TD
></TR
><TR
><TD
>line</TD
><TD
><A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
></TD
><TD
>&#13;        The current line number.  See also
        <A
HREF="language.constants.predefined.html"
>__LINE__</A
>.
       </TD
></TR
><TR
><TD
>file</TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
>&#13;        The current file name.  See also
        <A
HREF="language.constants.predefined.html"
>__FILE__</A
>.
       </TD
></TR
><TR
><TD
>class</TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
>&#13;        The current <A
HREF="language.oop.html"
>class</A
> name.  See also
        <A
HREF="language.constants.predefined.html"
>__CLASS__</A
>
       </TD
></TR
><TR
><TD
>object</TD
><TD
><A
HREF="language.types.object.html"
><B
CLASS="type"
>object</B
></A
></TD
><TD
>&#13;        The current <A
HREF="language.oop.html"
>object</A
>.
       </TD
></TR
><TR
><TD
>type</TD
><TD
><A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></TD
><TD
>&#13;        The current call type. If a method call, "-&#62;" is returned. If a static
        method call, "::" is returned. If a function call, nothing is returned.
       </TD
></TR
><TR
><TD
>args</TD
><TD
><A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
></TD
><TD
>&#13;        If inside a function, this lists the functions arguments.  If
        inside an included file, this lists the included file name(s).
       </TD
></TR
></TBODY
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></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN47371"
></A
><H2
>更新日志</H2
><P
>&#13;   <DIV
CLASS="informaltable"
><P
></P
><A
NAME="AEN47374"
></A
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>版本</TH
><TH
>说明</TH
></TR
></THEAD
><TBODY
><TR
><TD
>5.1.1</TD
><TD
>&#13;        Added the current <A
HREF="language.types.object.html"
><B
CLASS="type"
>object</B
></A
> as a possible return element.
       </TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN47385"
></A
><H2
>范例</H2
><P
>&#13;   <TABLE
WIDTH="100%"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN47388"
></A
><P
><B
>例 1. <B
CLASS="function"
>debug_backtrace()</B
> example</B
></P
><TABLE
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">// filename: a.php<br /><br /></font><font color="#007700">function </font><font color="#0000BB">a_test</font><font color="#007700">(</font><font color="#0000BB">$str</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"</font><font color="#007700">\n</font><font color="#DD0000">Hi: $str"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">debug_backtrace</font><font color="#007700">());<br />}<br /><br /></font><font color="#0000BB">a_test</font><font color="#007700">(</font><font color="#DD0000">'friend'</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;<br /></font><br /><font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">// filename: b.php<br /></font><font color="#007700">include_once </font><font color="#DD0000">'/tmp/a.php'</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;     Results similar to the following when executing 
    <TT
CLASS="filename"
>/tmp/b.php</TT
>:
    </P
><TABLE
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><PRE
CLASS="screen"
>Hi: friend
array(2) {
[0]=&#62;
array(4) {
    ["file"] =&#62; string(10) "/tmp/a.php"
    ["line"] =&#62; int(10)
    ["function"] =&#62; string(6) "a_test"
    ["args"]=&#62;
    array(1) {
      [0] =&#62; &#38;string(6) "friend"
    }
}
[1]=&#62;
array(4) {
    ["file"] =&#62; string(10) "/tmp/b.php"
    ["line"] =&#62; int(2)
    ["args"] =&#62;
    array(1) {
      [0] =&#62; string(10) "/tmp/a.php"
    }
    ["function"] =&#62; string(12) "include_once"
  }
}</PRE
></TD
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>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN47395"
></A
><H2
>参见</H2
><P
>&#13;   <P
></P
><TABLE
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><TBODY
><TR
><TD
><A
HREF="function.trigger-error.html"
><B
CLASS="function"
>trigger_error()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.debug-print-backtrace.html"
><B
CLASS="function"
>debug_print_backtrace()</B
></A
></TD
></TR
></TBODY
></TABLE
><P
></P
>
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