error_reporting

(PHP 4, PHP 5, PHP 7)

error_reportingGibt an, welche PHP-Fehlermeldungen gemeldet werden

Beschreibung

error_reporting ([ int $level ] ) : int

Mit error_reporting() wird die error_reporting Direktive zur Laufzeit des Programms gesetzt. In PHP gibt es viele Stufen für die Anzeige von Fehlermeldungen, die mit dieser Funktion für die Dauer der Programmausführung eingestellt werden kann. Wenn das optionale level Argument nicht übergeben wird, gibt error_reporting() das aktuelle Error Level zurück.

Parameter-Liste

level

Das neue error_reporting Level. Es können sowohl eine numerische Bitmaske als auch benannte Konstanten übergeben werden. Der Einsatz benannter Konstanten wird empfohlen um die Kompatibilität mit zukünftigen Versionen sicherzustellen. Wann immer Error Level Konstanten hinzugefügt werden erweitert sich der genutzte Integerbereich so das ältere Integerkonstanten nicht unbedingt weiter das erwartete Verhalten zeigen.

Die verfügbaren Konstanten und die Bedeutungen der jeweiligen Error Level sind im Abschnitt Vordefinierte Konstanten beschrieben.

Rückgabewerte

Gibt den bisherigen error_reporting Wert zurück oder das aktuelle Level, wenn level nicht übergeben wurde.

Changelog

Version Beschreibung
5.4.0 E_STRICT ist nun in E_ALL enthalten.
5.3.0 E_DEPRECATED und E_USER_DEPRECATED wurden hinzugefügt.
5.2.0 E_RECOVERABLE_ERROR wurde hinzugefügt.

Beispiele

Beispiel #1 error_reporting() Beispiel

<?php

// Error Reporting komplett abschalten
error_reporting(0);

// Nur einfache Fehler melden
error_reporting(E_ERROR E_WARNING E_PARSE);

// E_NOTICE ist sinnvoll um uninitialisierte oder
// falsch geschriebene Variablen zu entdecken
error_reporting(E_ERROR E_WARNING E_PARSE E_NOTICE);

// Melde alle Fehler außer E_NOTICE
error_reporting(E_ALL & ~E_NOTICE);

// Melde alle PHP Fehler (siehe Changelog)
error_reporting(E_ALL);

// Melde alle PHP Fehler
error_reporting(-1);

// Dies entspricht error_reporting(E_ALL);
ini_set('error_reporting'E_ALL);

?>

Anmerkungen

Warnung

Der Großteil der E_STRICT Fehler werden zur Compile-Zeit generiert und werden somit nicht angezeigt, wenn E_STRICT zur Laufzeit zu error_reporting hinzugefügt wird (und auch andersrum).

Tipp

Durch Übergeben des Wertes -1 werden alle möglichen Fehler angezeigt, auch wenn neue Level in zukünftigen PHP-Versionen hinzugefügt werden. Die E_ALL Konstante verhält sich seit PHP 5.4 ebenfalls so.

Siehe auch

add a note add a note

User Contributed Notes 25 notes

up
324
info at hephoz dot de
11 years ago
If you just see a blank page instead of an error reporting and you have no server access so you can't edit php configuration files like php.ini try this:

- create a new file in which you include the faulty script:

<?php
error_reporting
(E_ALL);
ini_set("display_errors", 1);
include(
"file_with_errors.php");
?>

- execute this file instead of the faulty script file

now errors of your faulty script should be reported.
this works fine with me. hope it solves your problem as well!
up
32
dave at davidhbrown dot us
13 years ago
The example of E_ALL ^ E_NOTICE is a 'bit' confusing for those of us not wholly conversant with bitwise operators.

If you wish to remove notices from the current level, whatever that unknown level might be, use & ~ instead:

<?php
//....
$errorlevel=error_reporting();
error_reporting($errorlevel & ~E_NOTICE);
//...code that generates notices
error_reporting($errorlevel);
//...
?>

^ is the xor (bit flipping) operator and would actually turn notices *on* if they were previously off (in the error level on its left). It works in the example because E_ALL is guaranteed to have the bit for E_NOTICE set, so when ^ flips that bit, it is in fact turned off. & ~ (and not) will always turn off the bits specified by the right-hand parameter, whether or not they were on or off.
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7
Fernando Piancastelli
14 years ago
The error_reporting() function won't be effective if your display_errors directive in php.ini is set to "Off", regardless of level reporting you set. I had to set

display_errors = On
error_reporting = ~E_ALL

to keep no error reporting as default, but be able to change error reporting level in my scripts.
I'm using PHP 4.3.9 and Apache 2.0.
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11
keithm at aoeex dot com
9 years ago
Some E_STRICT errors seem to be thrown during the page's compilation process.  This means they cannot be disabled by dynamically altering the error level at run time within that page.

The work-around for this was to rename the file and replace the original with a error_reporting() call and then a require() call.

Ex, rename index.php to index.inc.php, then re-create index.php as:

<?php
error_reporting
(E_ALL & ~(E_STRICT|E_NOTICE));
require(
'index.inc.php');
?>

That allows you to alter the error reporting prior to the file being compiled.

I discovered this recently when I was given code from another development firm that triggered several E_STRICT errors and I wanted to disable E_STRICT on a per-page basis.
up
2
Rash
4 years ago
If you are using the PHP development server, run from the command line via `php -S servername:port`, every single error/notice/warning will be reported in the command line itself, with file name, and line number, and stack trace.

So if you want to keep a log of all the errors even after page reloads (for help in debugging, maybe), running the PHP development server can be useful.
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1
qeremy ! gmail
4 years ago
If you want to see all errors in your local environment, you can set your project URL like "foo.com.local" locally and put that in bootstrap file.

<?php
if (substr($_SERVER['SERVER_NAME'], -6) == '.local') {
   
ini_set('display_errors', 1);
   
ini_set('error_reporting', E_ALL);
   
// or error_reporting(E_ALL);
}
?>
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4
ecervetti at orupaca dot fr
10 years ago
It could save two minutes to someone:
E_ALL & ~E_NOTICE  integer value is 6135
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2
rojaro at gmail dot com
9 years ago
To enable error reporting for *ALL* error messages including every error level (including E_STRICT, E_NOTICE etc.), simply use:

<?php error_reporting(-1); ?>
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3
misplacedme at gmail dot com
10 years ago
I always code with E_ALL set.
After a couple of pages of
<?php
$username
= (isset($_POST['username']) && !empty($_POST['username']))....
?>

I made this function to make things a little bit quicker.  Unset values passed by reference won't trigger a notice.

<?php
function test_ref(&$var,$test_function='',$negate=false) {
   
$stat = true;
    if(!isset(
$var)) $stat = false;
    if (!empty(
$test_function) && function_exists($test_function)){
       
$stat = $test_function($var);
       
$stat = ($negate) ? $stat^1 : $stat;
    }
    elseif(
$test_function == 'empty') {
       
$stat = empty($var);
       
$stat = ($negate) ? $stat^1 : $stat;
    }
    elseif (!
function_exists($test_function)) {
       
$stat = false;
       
trigger_error("$test_function() is not a valid function");
    }
   
$stat = ($stat) ? true : false;
    return
$stat;
}
$a = '';
$b = '15';

test_ref($a,'empty',true);  //False
test_ref($a,'is_int');  //False
test_ref($a,'is_numeric');  //False
test_ref($b,'empty',true);  //true
test_ref($b,'is_int');  //False
test_ref($b,'is_numeric');  //false
test_ref($unset,'is_numeric');  //false
test_ref($b,'is_number');  //returns false, with an error.
?>
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0
lhenry at lhenry dot com
20 days ago
In php7,  what was generally a notice or a deprecated is now a warning : the same level of a mysql error …  unacceptable for me.

I do have dozen of old projects and I surely d'ont want to define every variable which I eventually wrote 20y ago.

So two option: let php7 degrade my expensive SSDs writing Gb/hours or implement smthing like server level monitoring ( with auto_[pre-ap]pend_file in php.ini) and turn off E_WARNING

Custom overriding the level of php errors should be super handy and flexible …
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0
huhiko334 at yandex dot ru
1 year ago
If you get a weird mysql warnings like "Warning: mysql_query() : Your query requires a full tablescan...", don't look for error_reporting settings - it's set in php.ini.
You can turn it off with
ini_set("mysql.trace_mode","Off");
in your script
http://tinymy.link/mctct
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0
luisdev
1 year ago
This article refers to these two reporting levels:

// Report all PHP errors (see changelog)
error_reporting(E_ALL);

// Report all PHP errors
error_reporting(-1);

What is the difference between those two levels?

Please update this article with a clear explanation of the difference and the possible use cases.
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0
kevinson112 at yahoo dot com
1 year ago
I had the problem that if there was an error, php would just give me a blank page.  Any error at all forced a blank page instead of any output whatsoever, even though I made sure that I had error_reporting set to E_ALL, display_errors turned on, etc etc.  But simply running the file in a different directory allowed it to show errors!

Turns out that the error_log file in the one directory was full (2.0 Gb).  I erased the file and now errors are displayed normally.  It might also help to turn error logging off.

https://techysupport.co/norton-tech-support/
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0
adam at adamhahn dot com
2 years ago
To expand upon the note by chris at ocproducts dot com. If you prepend @ to error_reporting(), the function will always return 0.

<?php
error_reporting
(E_ALL);
var_dump(
   
error_reporting(), // value of E_ALL,
   
@error_reporting() // value is 0
);
?>
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1
Daz Williams (The Northeast)
10 years ago
Only display php errors to the developer...

<?php
if($_SERVER['REMOTE_ADDR']=="00.00.00.00")
{
 
ini_set('display_errors','On');
}
else
{
 
ini_set('display_errors','Off');
}
?>

Just replace 00.00.00.00 with your ip address.
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0
forcemdt
6 years ago
Php >5.4

Creating a Custom Error Handler

set_error_handler("customError",E_ALL);
function customError($errno, $errstr)
  {
  echo "<b>Error:</b> [$errno] $errstr<br>";
  echo "Ending Script";
  die();
  }
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1
fredrik at demomusic dot nu
14 years ago
Remember that the error_reporting value is an integer, not a string ie "E_ALL & ~E_NOTICE".

This is very useful to remember when setting error_reporting levels in httpd.conf:

Use the table above or:

<?php
ini_set
("error_reporting", E_YOUR_ERROR_LEVEL);
echo
ini_get("error_reporting");
?>

To get the appropriate integer for your error-level. Then use:

php_admin_value error_reporting YOUR_INT

in httpd.conf

I want to share this rather straightforward tip as it is rather annoying for new php users trying to understand why things are not working when the error-level is set to (int) "E_ALL" = 0...

Maybe the PHP-developers should make ie error_reporting("E_ALL"); output a E_NOTICE informative message about the mistake?
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0
roberto at spadim dot com dot br
9 years ago
see more information about php 5.3 deprecated errors

http://php.net/manual/en/migration53.deprecated.php
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0
kc8yds at gmail dot com
11 years ago
this is to show all errors for code that may be run on different versions

for php 5 it shows E_ALL^E_STRICT and for other versions just E_ALL

if anyone sees any problems with it please correct this post

<?php
ini_set
('error_reporting', version_compare(PHP_VERSION,5,'>=') && version_compare(PHP_VERSION,6,'<') ?E_ALL^E_STRICT:E_ALL);
?>
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0
Alex
12 years ago
error_reporting() may give unexpected results if the @ error suppression directive is used.

<?php
@include 'config.php';
include
'foo.bar';        // non-existent file
?>

config.php
<?php
error_reporting
(0);
?>

will throw an error level E_WARNING in relation to the non-existent file (depending of course on your configuration settings).  If the suppressor is removed, this works as expected.

Alternatively using ini_set('display_errors', 0) in config.php will achieve the same result.  This is contrary to the note above which says that the two instructions are equivalent.
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-1
chris at ocproducts dot com
3 years ago
The error_reporting() function will return 0 if error suppression is currently active somewhere in the call tree (via the @ operator).
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0
j dot schriver at vindiou dot com
19 years ago
error_reporting() has no effect if you have defined your own error handler with set_error_handler()

[Editor's Note: This is not quite accurate.

E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR and E_COMPILE_WARNING error levels will be handled as per the error_reporting settings.

All other levels of errors will be passed to the custom error handler defined by set_error_handler().

Zeev Suraski suggests that a simple way to use the defined levels of error reporting with your custom error handlers is to add the following line to the top of your error handling function:

if (!($type & error_reporting())) return;

-zak@php.net]
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-2
teynon1 at gmail dot com
7 years ago
It might be a good idea to include E_COMPILE_ERROR in error_reporting.

If you have a customer error handler that does not output warnings, you may get a white screen of death if a "require" fails.

Example:
<?php
  error_reporting
(E_ERROR | E_WARNING | E_PARSE);

  function
myErrorHandler($errno, $errstr, $errfile, $errline) {
   
// Do something other than output message.
   
return true;
  }

 
$old_error_handler = set_error_handler("myErrorHandler");

  require
"this file does not exist";
?>

To prevent this, simply include E_COMPILE_ERROR in the error_reporting.

<?php
  error_reporting
(E_ERROR | E_WARNING | E_PARSE | E_COMPILE_ERROR);
?>
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-1
vdephily at bluemetrix dot com
14 years ago
Note that E_NOTICE will warn you about uninitialized variables, but assigning a key/value pair counts as initialization, and will not trigger any error :
<?php
error_reporting
(E_ALL);

$foo = $bar; //notice : $bar uninitialized

$bar['foo'] = 'hello'; // no notice, although $bar itself has never been initialized (with "$bar = array()" for example)

$bar = array('foobar' => 'barfoo');
$foo = $bar['foobar'] // ok

$foo = $bar['nope'] // notice : no such index
?>
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-1
DarkGool
14 years ago
In phpinfo() error reporting level display like a bit (such as 4095)

Maybe it is a simply method to understand what a level set on your host
if you are not have access to php.ini file

<?php
$bit
= ini_get('error_reporting');
while (
$bit > 0) {
    for(
$i = 0, $n = 0; $i <= $bit; $i = 1 * pow(2, $n), $n++) {
       
$end = $i;
    }
   
$res[] = $end;
   
$bit = $bit - $end;
}
?>

In $res you will have all constants of error reporting
$res[]=int(16) // E_CORE_ERROR
$res[]=int(8)    // E_NOTICE
...
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