<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >debug_print_backtrace</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="Error Handling and Logging Functions" HREF="ref.errorfunc.html"><LINK REL="PREVIOUS" TITLE="debug_backtrace" HREF="function.debug-backtrace.html"><LINK REL="NEXT" TITLE="error_get_last" HREF="function.error-get-last.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.debug-backtrace.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.error-get-last.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.debug-print-backtrace" ></A >debug_print_backtrace</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN47404" ></A ><P > (PHP 5)</P >debug_print_backtrace -- Prints a backtrace </DIV ><DIV CLASS="refsect1" ><A NAME="AEN47407" ></A ><H2 >说明</H2 >void <B CLASS="methodname" >debug_print_backtrace</B > ( void )<BR ></BR ><P > <B CLASS="function" >debug_print_backtrace()</B > prints a PHP backtrace. It prints the function calls, included/required files and <A HREF="function.eval.html" ><B CLASS="function" >eval()</B ></A >ed stuff. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN47416" ></A ><H2 >参数</H2 ><P > This function has no parameters. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN47419" ></A ><H2 >返回值</H2 ><P > 无返回值。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN47422" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN47425" ></A ><P ><B >例 1. <B CLASS="function" >debug_print_backtrace()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// include.php file<br /><br /></font><font color="#007700">function </font><font color="#0000BB">a</font><font color="#007700">() {<br /> </font><font color="#0000BB">b</font><font color="#007700">();<br />}<br /><br />function </font><font color="#0000BB">b</font><font color="#007700">() {<br /> </font><font color="#0000BB">c</font><font color="#007700">();<br />}<br /><br />function </font><font color="#0000BB">c</font><font color="#007700">(){<br /> </font><font color="#0000BB">debug_print_backtrace</font><font color="#007700">();<br />}<br /><br /></font><font color="#0000BB">a</font><font color="#007700">();<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// test.php file<br />// this is the file you should run<br /><br /></font><font color="#007700">include </font><font color="#DD0000">'include.php'</font><font color="#007700">;<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >上例的输出类似于:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >#0 eval() called at [/tmp/include.php:5] #1 a() called at [/tmp/include.php:17] #2 include(/tmp/include.php) called at [/tmp/test.php:3] #0 c() called at [/tmp/include.php:10] #1 b() called at [/tmp/include.php:6] #2 a() called at [/tmp/include.php:17] #3 include(/tmp/include.php) called at [/tmp/test.php:3]</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN47432" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.debug-backtrace.html" ><B CLASS="function" >debug_backtrace()</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.debug-backtrace.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.error-get-last.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >debug_backtrace</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.errorfunc.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >error_get_last</TD ></TR ></TABLE ></DIV ></BODY ></HTML >