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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 310770 $ -->
<refentry xml:id="function.debug-print-backtrace" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>debug_print_backtrace</refname>
<refpurpose>
Prints a backtrace
</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> prints a PHP backtrace. It
prints the function calls, included/required files and
<function>eval</function>ed stuff.
</para>
</refsect1>
<refsect1 role="parameters"><!-- {{{ -->
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
As of 5.3.6, this parameter is a bitmask for the following options:
<table>
<title><function>debug_print_backtrace</function> options</title>
<tgroup cols="2">
<tbody>
<row>
<entry>DEBUG_BACKTRACE_IGNORE_ARGS</entry>
<entry>
Whether or not to omit the "args" index, and thus all the function/method arguments,
to save memory.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>limit</parameter></term>
<listitem>
<para>
As of 5.4.0, this parameter can be used to limit the number of stack frames printed.
By default (<parameter>limit</parameter>=<literal>0</literal>) it prints all stack frames.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1><!-- }}} -->
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.4.0</entry>
<entry>
Added the optional parameter <parameter>limit</parameter>.
</entry>
</row>
<row>
<entry>5.3.6</entry>
<entry>
Added the optional parameter <parameter>options</parameter>.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>debug_print_backtrace</function> example</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
// test.php file
// this is the file you should run
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>
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Local variables:
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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:
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
|
