betz Tue Oct 8 06:44:01 2002 EDT
Added files:
/phpdoc/en/reference/errorfunc examples.xml
Modified files:
/phpdoc/en/reference/errorfunc reference.xml ini.xml constants.xml
Log:
contents from error-handling added
Index: phpdoc/en/reference/errorfunc/reference.xml
diff -u phpdoc/en/reference/errorfunc/reference.xml:1.5
phpdoc/en/reference/errorfunc/reference.xml:1.6
--- phpdoc/en/reference/errorfunc/reference.xml:1.5 Sun Sep 29 20:09:44 2002
+++ phpdoc/en/reference/errorfunc/reference.xml Tue Oct 8 06:44:00 2002
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.5 $ -->
+<!-- $Revision: 1.6 $ -->
<reference id="ref.errorfunc">
<title>Error Handling and Logging Functions</title>
<titleabbrev>Errors and Logging</titleabbrev>
@@ -40,11 +40,12 @@
&reference.errorfunc.constants;
+ &reference.errorfunc.examples;
+
<section id="errorfunc.seealso">
&reftitle.seealso;
<para>
- Fore more Information see the section
- <link linkend="features.error-handling">Error Handling</link>.
+ See also <function>syslog</function>.
</para>
</section>
Index: phpdoc/en/reference/errorfunc/ini.xml
diff -u phpdoc/en/reference/errorfunc/ini.xml:1.1
phpdoc/en/reference/errorfunc/ini.xml:1.2
--- phpdoc/en/reference/errorfunc/ini.xml:1.1 Sun Sep 29 20:09:44 2002
+++ phpdoc/en/reference/errorfunc/ini.xml Tue Oct 8 06:44:00 2002
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.1 $ -->
+<!-- $Revision: 1.2 $ -->
<section id="errorfunc.configuration">
&reftitle.runtime;
&extension.runtime;
@@ -114,14 +114,23 @@
Set the error reporting level. The parameter is either an integer
representing a bit field, or named constants. The error_reporting
levels and constants are described in
- <link linkend="errorfunc.constants">Predefined Constants</link>
- , and in &php.ini;. To set at runtime, use the
+ <link linkend="errorfunc.constants">Predefined Constants</link>,
+ and in &php.ini;. To set at runtime, use the
<function>error_reporting</function> function. See also the
<link linkend="ini.display-errors">display_errors</link> directive.
</para>
<para>
The default value does not show <constant>E_NOTICE</constant> level
errors. You may want to show them during development.
+ </para>
+ <para>
+ In PHP 4, the default setting is
+ <literal>E_ALL & ~E_NOTICE</literal>, meaning to display all errors
+ and warnings which are not E_NOTICE-level. In PHP 3, the default
+ setting is <literal>(E_ERROR | E_WARNING | E_PARSE)</literal>,
+ meaning the same thing. Note, however, that since constants are not
+ supported in PHP 3's <filename>php3.ini</filename>, the error_reporting
+ setting there must be numeric; hence, it is <literal>7</literal>.
</para>
</listitem>
</varlistentry>
Index: phpdoc/en/reference/errorfunc/constants.xml
diff -u phpdoc/en/reference/errorfunc/constants.xml:1.4
phpdoc/en/reference/errorfunc/constants.xml:1.5
--- phpdoc/en/reference/errorfunc/constants.xml:1.4 Mon Jul 22 09:38:12 2002
+++ phpdoc/en/reference/errorfunc/constants.xml Tue Oct 8 06:44:00 2002
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
<section id="errorfunc.constants">
&reftitle.constants;
&extension.constants.core;
@@ -12,12 +12,13 @@
</note>
<table>
<title>Errors and Logging</title>
- <tgroup cols="3">
+ <tgroup cols="4">
<thead>
<row>
<entry>Value</entry>
<entry>Constant</entry>
<entry>Description</entry>
+ <entry>Note</entry>
</row>
</thead>
<tbody>
@@ -32,6 +33,7 @@
recovered from, such as a memory allocation problem.
Execution of the script is halted.
</entry>
+ <entry></entry>
</row>
<row>
@@ -44,6 +46,7 @@
Run-time warnings (non-fatal errors). Execution of the script is not
halted.
</entry>
+ <entry></entry>
</row>
<row>
@@ -56,6 +59,7 @@
Compile-time parse errors. Parse errors should only be generated by
the parser.
</entry>
+ <entry></entry>
</row>
<row>
@@ -69,6 +73,7 @@
could indicate an error, but could also happen in the normal course of
running a script.
</entry>
+ <entry></entry>
</row>
<row>
@@ -81,6 +86,7 @@
Fatal errors that occur during PHP's initial startup. This is like an
<constant>E_ERROR</constant>, except it is generated by the core of PHP.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -92,8 +98,9 @@
<entry>
Warnings (non-fatal errors) that occur during PHP's initial startup.
This is like an <constant>E_WARNING</constant>, except it is generated
- by the core of PHP. PHP 4 only.
+ by the core of PHP.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -104,8 +111,9 @@
</entry>
<entry>
Fatal compile-time errors. This is like an <constant>E_ERROR</constant>,
- except it is generated by the Zend Scripting Engine. PHP 4 only.
+ except it is generated by the Zend Scripting Engine.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -117,8 +125,9 @@
<entry>
Compile-time warnings (non-fatal errors). This is like an
<constant>E_WARNING</constant>, except it is generated by the Zend
- Scripting Engine. PHP 4 only.
+ Scripting Engine.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -131,8 +140,8 @@
User-generated error message. This is like an
<constant>E_ERROR</constant>, except it is generated in PHP code by
using the PHP function <function>trigger_error</function>.
- PHP 4 only.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -145,8 +154,8 @@
User-generated warning message. This is like an
<constant>E_WARNING</constant>, except it is generated in PHP code by
using the PHP function <function>trigger_error</function>.
- PHP 4 only.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -159,8 +168,8 @@
User-generated notice message. This is like an
<constant>E_NOTICE</constant>, except it is generated in PHP code by
using the PHP function <function>trigger_error</function>.
- PHP 4 only.
</entry>
+ <entry>PHP 4 only</entry>
</row>
<row>
@@ -178,6 +187,15 @@
</tgroup>
</table>
+ <para>
+ The above values (either numerical or symbolic) are used to build
+ up a bitmask that specifies which errors to report. You can use the
+ <link linkend="language.operators.bitwise">bitwise operators</link>
+ to combine these values or mask out certain types of errors. Note
+ that only '|', '~', '!', and '&' will be understood within
+ &php.ini;, however, and that no bitwise
+ operators will be understood within <filename>php3.ini</filename>.
+ </para>
</section>
<!-- Keep this comment at the end of the file
Index: phpdoc/en/reference/errorfunc/examples.xml
+++ phpdoc/en/reference/errorfunc/examples.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<section id="errorfunc.examples">
&reftitle.examples;
<para>
Below we can see an example of using the error handling capabilities in
PHP. We define a error handling function which logs the information into
a file (using an XML format), and e-mails the developer in case a critical
error in the logic happens.
<example>
<title>Using error handling in a script</title>
<programlisting role="php">
<![CDATA[
<?php
// we will do our own error handling
error_reporting(0);
// user defined error handling function
function userErrorHandler ($errno, $errmsg, $filename, $linenum, $vars) {
// timestamp for the error entry
$dt = date("Y-m-d H:i:s (T)");
// define an assoc array of error string
// in reality the only entries we should
// consider are 2,8,256,512 and 1024
$errortype = array (
1 => "Error",
2 => "Warning",
4 => "Parsing Error",
8 => "Notice",
16 => "Core Error",
32 => "Core Warning",
64 => "Compile Error",
128 => "Compile Warning",
256 => "User Error",
512 => "User Warning",
1024=> "User Notice"
);
// set of errors for which a var trace will be saved
$user_errors = array(E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE);
$err = "<errorentry>\n";
$err .= "\t<datetime>".$dt."</datetime>\n";
$err .= "\t<errornum>".$errno."</errornum>\n";
$err .= "\t<errortype>".$errortype[$errno]."</errortype>\n";
$err .= "\t<errormsg>".$errmsg."</errormsg>\n";
$err .= "\t<scriptname>".$filename."</scriptname>\n";
$err .= "\t<scriptlinenum>".$linenum."</scriptlinenum>\n";
if (in_array($errno, $user_errors))
$err .= "\t<vartrace>".wddx_serialize_value($vars,"Variables")."</vartrace>\n";
$err .= "</errorentry>\n\n";
// for testing
// echo $err;
// save to the error log, and e-mail me if there is a critical user error
error_log($err, 3, "/usr/local/php4/error.log");
if ($errno == E_USER_ERROR)
mail("[EMAIL PROTECTED]","Critical User Error",$err);
}
function distance ($vect1, $vect2) {
if (!is_array($vect1) || !is_array($vect2)) {
trigger_error("Incorrect parameters, arrays expected", E_USER_ERROR);
return NULL;
}
if (count($vect1) != count($vect2)) {
trigger_error("Vectors need to be of the same size", E_USER_ERROR);
return NULL;
}
for ($i=0; $i<count($vect1); $i++) {
$c1 = $vect1[$i]; $c2 = $vect2[$i];
$d = 0.0;
if (!is_numeric($c1)) {
trigger_error("Coordinate $i in vector 1 is not a number, using zero",
E_USER_WARNING);
$c1 = 0.0;
}
if (!is_numeric($c2)) {
trigger_error("Coordinate $i in vector 2 is not a number, using zero",
E_USER_WARNING);
$c2 = 0.0;
}
$d += $c2*$c2 - $c1*$c1;
}
return sqrt($d);
}
$old_error_handler = set_error_handler("userErrorHandler");
// undefined constant, generates a warning
$t = I_AM_NOT_DEFINED;
// define some "vectors"
$a = array(2,3,"foo");
$b = array(5.5, 4.3, -1.6);
$c = array (1,-3);
// generate a user error
$t1 = distance($c,$b)."\n";
// generate another user error
$t2 = distance($b,"i am not an array")."\n";
// generate a warning
$t3 = distance($a,$b)."\n";
?>
]]>
</programlisting>
</example>
</para>
</section>
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--
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