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debug-print-backtrace.xml
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150 lines (138 loc) · 3.67 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 1fd69376c6c90066f086c99a32621f0b3fd47ba0 Maintainer: daijie Status: ready -->
<!-- CREDITS: mowangjuanzi, Luffy -->
<refentry xml:id="function.debug-print-backtrace" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>debug_print_backtrace</refname>
<refpurpose>
打印一条回溯。
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>void</type><methodname>debug_print_backtrace</methodname>
<methodparam choice="opt"><type>int</type><parameter>options</parameter><initializer>0</initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>limit</parameter><initializer>0</initializer></methodparam>
</methodsynopsis>
<para>
<function>debug_print_backtrace</function> 打印了一条 PHP 回溯。它打印了函数调用、被 <function>include</function>d/<function>require</function>d 的文件和
<function>eval</function> 的代码。
</para>
</refsect1>
<refsect1 role="parameters"><!-- {{{ -->
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
这个参数是以下选项的位掩码：
<table>
<title><function>debug_print_backtrace</function> 选项</title>
<tgroup cols="2">
<tbody>
<row>
<entry>DEBUG_BACKTRACE_IGNORE_ARGS</entry>
<entry>
是否忽略 "args" 的索引，包括所有的 function/method 的参数，能够节省内存开销。
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>limit</parameter></term>
<listitem>
<para>
这个参数能够用于限制返回堆栈帧的数量。
默认为 (<parameter>limit</parameter>=<literal>0</literal>) ，返回所有的堆栈帧。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1><!-- }}} -->
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>debug_print_backtrace</function> 范例</title>
<programlisting role="php">
<![CDATA[
<?php
// include.php file
function a() {
b();
}
function b() {
c();
}
function c(){
debug_print_backtrace();
}
a();
?>
]]>
</programlisting>
<programlisting role="php">
<![CDATA[
<?php
// 文件 test.php
// 这是你应该运行的文件
include 'include.php';
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
#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]
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>debug_backtrace</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->