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<HTML
><HEAD
><TITLE
>Error handling</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.41"><LINK
REL="HOME"
TITLE="PHP3 Manual"
HREF="manual.html"><LINK
REL="UP"
TITLE="Features"
HREF="features.html"><LINK
REL="PREVIOUS"
TITLE="Regular expressions"
HREF="feature-regexps.html"><LINK
REL="NEXT"
TITLE="Connection Handling"
HREF="feature-connection-handling.html"></HEAD
><BODY
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"
>PHP3 Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="feature-regexps.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 4. Features</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="feature-connection-handling.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="FEATURE-ERROR-HANDLING"
>Error handling</A
></H1
><P
> There are 4 types of errors and warnings in PHP. They are:
<P
></P
><UL
><LI
><P
>1 - Normal Function Errors
</P
></LI
><LI
><P
>2 - Normal Warnings
</P
></LI
><LI
><P
>4 - Parser Errors
</P
></LI
><LI
><P
>8 - Notices (warnings you can ignore but which
may imply a bug in your code)
</P
></LI
></UL
>
</P
><P
> The above 4 numbers are added up to define an error reporting
level. The default error reporting level is 7 which is 1 + 2 + 4,
or everything except notices. This level can be changed in the
php3.ini file with the error_reporting directive. It can also be
set in your Apache httpd.conf file with the php3_error_reporting
directive or lastly it may be set at runtime within a script using
the <A
HREF="function.error-reporting.html"
><B
CLASS="FUNCTION"
>error_reporting()</B
></A
> function.
</P
><P
>
All <A
HREF="expressions.html"
>PHP expressions</A
> can also be called
with the "@" prefix, which turns off error reporting for that particular
expression. If an error occurred during such an expression and the
<A
HREF="configuration.html#INI.TRACK-ERRORS"
>track_errors</A
> feature
is enabled, you can find the error message in the global variable
$php_errormsg.
</P
></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="feature-regexps.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="feature-connection-handling.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Regular expressions</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="features.html"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Connection Handling</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
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