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debugger.html
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debugger.html
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<HTML
><HEAD
><TITLE
>The PHP Debugger</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK
REL="HOME"
TITLE="PHP Manual"
HREF="manual.html"><LINK
REL="UP"
TITLE="Appendixes"
HREF="appendixes.html"><LINK
REL="PREVIOUS"
TITLE="Reporting Errors"
HREF="phpdevel-errors.html"><LINK
REL="NEXT"
TITLE="Debugger Protocol"
HREF="debugger-protocol.html"><META
NAME="HTTP_EQUIV"
CONTENT="text/html; charset=ISO-8859-1"></HEAD
><BODY
CLASS="appendix"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>PHP Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="phpdevel-errors.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="debugger-protocol.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="appendix"
><H1
><A
NAME="debugger"
>Appendix C. The PHP Debugger</A
></H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="debugger.html#debugger-using"
>Using the Debugger</A
></DT
><DT
><A
HREF="debugger-protocol.html"
>Debugger Protocol</A
></DT
></DL
></DIV
><DIV
CLASS="sect1"
><H1
CLASS="sect1"
><A
NAME="debugger-using"
>Using the Debugger</A
></H1
><P
> PHP's internal debugger is useful for tracking down evasive bugs.
The debugger works by connecting to a <SPAN
CLASS="acronym"
>TCP</SPAN
> port
for every time PHP starts up. All error messages from that
request will be sent to this TCP connection. This information is
intended for "debugging server" that can run inside an
<SPAN
CLASS="acronym"
>IDE</SPAN
> or programmable editor (such as Emacs).
</P
><P
> How to set up the debugger:
<P
></P
><OL
TYPE="1"
><LI
><P
>
Set up a TCP port for the debugger in the <A
HREF="configuration.html#configuration.file"
>configuration file</A
> (<A
HREF="configuration.html#ini.debugger.port"
>debugger.port</A
>) and enable it
(<A
HREF="configuration.html#ini.debugger.enabled"
>debugger.enabled</A
>).
</P
></LI
><LI
><P
>
Set up a TCP listener on that port somewhere (for example
<B
CLASS="command"
>socket -l -s 1400</B
> on UNIX).
</P
></LI
><LI
><P
>
In your code, run
"debugger_on(<TT
CLASS="replaceable"
><I
>host</I
></TT
>)", where
<TT
CLASS="replaceable"
><I
>host</I
></TT
> is the IP number or name of the
host running the <SPAN
CLASS="acronym"
>TCP</SPAN
> listener.
</P
></LI
></OL
>
Now, all warnings, notices etc. will show up on that listener
socket, <I
CLASS="emphasis"
>even if you them turned off with
<A
HREF="function.error-reporting.html"
><B
CLASS="function"
>error_reporting()</B
></A
></I
>.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
The code for the debugger has not been ported to PHP 4, at the
present time only PHP 3 supports the debugger code.
</P
></BLOCKQUOTE
></DIV
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="phpdevel-errors.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="manual.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="debugger-protocol.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Reporting Errors</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="appendixes.html"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Debugger Protocol</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>