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<?xml version="1.0" encoding="iso-8859-2"?>
<!-- EN-Revision: 1.19 Maintainer: luk Status: ready -->
<appendix id="debugger">
<title>Ladn (debugging) PHP</title>
<sect1 id="debugger-about">
<title>O debuggeru</title>
<simpara>
PHP 3 obsahuje pro podporu pro sov zaloen debugger.
</simpara>
<simpara>
PHP 4 nem vnitn mechanismy pro ladn. Nicmn mete pouvat
nkter z externch debugger.
<ulink url="&url.zend.ide;">Zend IDE</ulink> obsahuje debugger, a
ladic rozen (jako DBG) najdete tak na
<ulink url="&url.dbg;">&url.dbg;</ulink> nebo na
<ulink url="&url.apd;">Advanced PHP Debugger</ulink> (APD).
</simpara>
</sect1>
<sect1 id="debugger-using">
<title>Pouit debuggeru</title>
<para>
Vnitn debugger v PHP 3 je uiten pro hledn zludnch chyb.
Debugger pracuje prostednictvm pipojen na
<acronym>TCP</acronym> port pi kadm startu PHP 3.
Vechny chybov zprvy z pslun relace jsou poslny do tohoto TCP
kanlu. Tyto informace jsou ureny pro "debugging server", kter me
bet uvnit <acronym>IDE</acronym> nebo programovatelnho editoru
(jako je Emacs).
</para>
<para>
Jak nastavit debugger:
<orderedlist>
<listitem>
<simpara>
Nastavte TCP port pro debugger v <link
linkend="configuration.file">konfiguranm souboru</link> (<link
linkend="ini.debugger.port">debugger.port</link>) a aktivujte ho
(<link linkend="ini.debugger.enabled">debugger.enabled</link>).
</simpara>
</listitem>
<listitem>
<simpara>
Nastavte TCP pro poslech na njakm portu (napklad
<command>socket -l -s 1400</command> v UNIXu).
</simpara>
</listitem>
<listitem>
<simpara>
Ve vaem kdu spuste
"debugger_on(<replaceable>host</replaceable>)", kde
<replaceable>host</replaceable> je IP adresa nebo domnov nzev
potae, kde b pslun <acronym>TCP</acronym> server.
</simpara>
</listitem>
</orderedlist>
Nyn budou vechna varovn, informativn zprvy apod. mit na sov
socket, <emphasis>a to i tehdy, pokud je vypnete pomoc nastaven
<function>error_reporting</function></emphasis>.
</para>
</sect1>
<sect1 id="debugger-protocol">
<title>Protokol debuggeru</title>
<para>
Protokol PHP 3 debuggeru je dkov orientovan. Kad dek je uritho
<emphasis>typu</emphasis> a nkolik dk tvo
<emphasis>zprvu</emphasis>. Kad zprva zan dkem typu
<literal>start</literal> a kon dkem typu
<literal>end</literal>. PHP 3 me souasn poslat dky pro rzn zprvy.
</para>
<para>
dek m tento formt:
<informalexample>
<literallayout>
<replaceable>date</replaceable> <replaceable>time</replaceable>
<replaceable>host</replaceable>(<replaceable>pid</replaceable>)
<replaceable>type</replaceable>:
<replaceable>message-data</replaceable>
</literallayout>
</informalexample>
<variablelist>
<varlistentry>
<term><replaceable>date</replaceable></term>
<listitem>
<simpara>
Datum ve formtu ISO 8601
(<replaceable>yyyy</replaceable>-<replaceable>mm</replaceable>-<replaceable>dd</replaceable>)
</simpara>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>time</replaceable></term>
<listitem>
<simpara>as vetn mikrosekund:
<replaceable>hh</replaceable>:<replaceable>mm</replaceable>:<replaceable>uuuuuu</replaceable>
</simpara>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>host</replaceable></term>
<listitem>
<simpara>
DNS (domnov) nzev nebo IP adresa potae, kde byla vygenerovna
chyba ve skriptu.
</simpara>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>pid</replaceable></term>
<listitem>
<simpara>
PID (process id) na potai <replaceable>host</replaceable> procesu,
kter vygeneroval chybu v PHP 3 skriptu.
</simpara>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>type</replaceable></term>
<listitem>
<para>
Typ dku. k pijmajcmu programu, jak m s nsledujcmi
daty naloit:
<table>
<title>Typy dk debuggeru</title>
<tgroup cols="2">
<thead>
<row>
<entry>Nzev</entry>
<entry>Vznam</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>start</literal></entry>
<entry>
k pijmajcmu programu, e tady zan zprva debuggeru.
Obsahem datov sti (<replaceable>data</replaceable>)bude typ
chybov zprvy z ne uvedenho seznamu.
</entry>
</row>
<row>
<entry><literal>message</literal></entry>
<entry>Chybov zprva PHP 3.</entry>
</row>
<row>
<entry><literal>location</literal></entry>
<entry>
Nzev souboru a slo dku, kde nastala chyba. Prvn dek
<literal>location</literal> bude vdy obsahovat nejvy rove
umstn. <replaceable>data</replaceable> bude obsahovat
<literal><replaceable>file</replaceable>:<replaceable>line</replaceable></literal>.
dek <literal>location</literal> bude nsledovat za kadm
dkem <literal>message</literal> a kadm dkem
<literal>function</literal>.
</entry>
</row>
<row>
<entry>
<literal>frames</literal></entry>
<entry>Poet rmc v nsledujcm vpisu zsobnku. Pokud jsou
zde tyi rmce, oekvejte informace o tyech rovnch
volanch funkc. Pokud se dn dek "frames" nevyskytuje,
pedpokld se hloubka 0 (chyba nastala na nejvy rovni).
</entry>
</row>
<row>
<entry>
<literal>function</literal></entry>
<entry>
Nzev funkce, kde nastala chyba. Bude se opakovat pro kadou
rove zsobnku voln funkc.
</entry>
</row>
<row>
<entry><literal>end</literal></entry>
<entry>
k pijmajcmu programu, e tady kon zprva debuggeru.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>data</replaceable></term>
<listitem>
<simpara>Data v dku.</simpara>
</listitem>
</varlistentry>
</variablelist>
<table>
<title>Typy chyb rozliovan debuggerem</title>
<tgroup cols="2">
<thead>
<row>
<entry>Debugger</entry>
<entry>PHP 3 Internal</entry>
</row>
</thead>
<tbody>
<row>
<entry><errortype>warning</errortype></entry>
<entry><errortype>E_WARNING</errortype></entry>
</row>
<row>
<entry><errortype>error</errortype></entry>
<entry><errortype>E_ERROR</errortype></entry>
</row>
<row>
<entry><errortype>parse</errortype></entry>
<entry><errortype>E_PARSE</errortype></entry>
</row>
<row>
<entry><errortype>notice</errortype></entry>
<entry><errortype>E_NOTICE</errortype></entry>
</row>
<row>
<entry><errortype>core-error</errortype></entry>
<entry><errortype>E_CORE_ERROR</errortype></entry>
</row>
<row>
<entry><errortype>core-warning</errortype></entry>
<entry><errortype>E_CORE_WARNING</errortype></entry>
</row>
<row>
<entry><errortype>unknown</errortype></entry>
<entry>(vechny ostatn)</entry>
</row>
</tbody>
</tgroup>
</table>
<example>
<title>Pklad - zprva debuggeru</title>
<literallayout>
1998-04-05 23:27:400966 lucifer.guardian.no(20481) start: notice
1998-04-05 23:27:400966 lucifer.guardian.no(20481) message: Uninitialized variable
1998-04-05 23:27:400966 lucifer.guardian.no(20481) location: (&null;):7
1998-04-05 23:27:400966 lucifer.guardian.no(20481) frames: 1
1998-04-05 23:27:400966 lucifer.guardian.no(20481) function: display
1998-04-05 23:27:400966 lucifer.guardian.no(20481) location: /home/ssb/public_html/test.php3:10
1998-04-05 23:27:400966 lucifer.guardian.no(20481) end: notice
</literallayout>
</example>
</para>
</sect1>
</appendix>
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