error_get_last
(PHP 5 >= 5.2.0, PHP 7, PHP 8)
error_get_last — 最後に発生したエラーを取得する
パラメータ
この関数にはパラメータはありません。
戻り値
最後に発生したエラーについての情報を連想配列で返します。連想配列のキーは
"type"、"message"、"file" および "line" となります。
PHP の内部関数で発生したエラーの場合は、
"message" の先頭に関数名が含まれています。
エラーが発生していない場合は null を返します。
例
例1 error_get_last() の例
<?php
echo $a;
print_r(error_get_last());
?>上の例の出力は、 たとえば以下のようになります。
Array
(
[type] => 8
[message] => Undefined variable: a
[file] => C:\WWW\index.php
[line] => 2
)
参考
＋add a note
User Contributed Notes 13 notes
dmgx dot michael at gmail dot com ¶
14 years ago
If an error handler (see set_error_handler ) successfully handles an error then that error will not be reported by this function.
nicolas dot grekas+php at gmail dot com ¶
11 years ago
[Editor's note: as of PHP 7.0.0 there is error_clear_last() to clear the most recent error.]
To clear error_get_last(), or put it in a well defined state, you should use the code below. It works even when a custom error handler has been set.
<?php
// var_dump or anything else, as this will never be called because of the 0
set_error_handler('var_dump', 0);
@$undef_var;
restore_error_handler();
// error_get_last() is now in a well known state:
// Undefined variable: undef_var
... // Do something
$e = error_get_last();
...
?>
Skrol29 ¶
14 years ago
Function error_get_last() will return an error information even if the error is hidden because you've used character @, because of the "error_reporting" directive in the php.ini file, or because you've used function error_reporting().
Examples:
<?php
error_reporting(E_ALL ^ E_NOTICE);
$y = $x;
$err = error_get_last();
var_export($err);
?>
Will display: array ( 'type' => 8, 'message' => 'Undefined variable: x', 'file' => 'test.php', 'line' => 4, )
<?php
$y = @$x;
$err = error_get_last();
var_export($err);
?>
Will display: array ( 'type' => 8, 'message' => 'Undefined variable: x', 'file' => 'test.php', 'line' => 4, )
michael at getsprink dot com ¶
15 years ago
The error_get_last() function will give you the most recent error even when that error is a Fatal error.
Example Usage:
<?php
register_shutdown_function('handleFatalPhpError');
function handleFatalPhpError() {
$last_error = error_get_last();
if($last_error['type'] === E_ERROR) {
echo "Can do custom output and/or logging for fatal error here...";
}
}
?>
iant at clickwt dot com ¶
15 years ago
Beware that registing a shutdown function to catch errors won't work if other shutdown functions throw errors.
<?php
register_shutdown_function('cleanupObjects');
register_shutdown_function('handleFatalPhpError');
function cleanupObjects() {
trigger_error('An insignificant problem', E_USER_WARNING);
}
function handleFatalPhpError() {
$last_error = error_get_last();
if($last_error['type'] === E_ERROR || $last_error['type'] === E_USER_ERROR) {
echo "Can do custom output and/or logging for fatal error here...";
}
}
trigger_error('Something serious', E_USER_ERROR);
?>
In the above code, $last_error will contain the warning, becuase cleanupObjects() is called first.
php at joert dot net ¶
13 years ago
To simulate this function in a horrid way for php <5.2, you can use something like this.
<?php
if( !function_exists('error_get_last') ) {
set_error_handler(
create_function(
'$errno,$errstr,$errfile,$errline,$errcontext',
'
global $__error_get_last_retval__;
$__error_get_last_retval__ = array(
\'type\' => $errno,
\'message\' => $errstr,
\'file\' => $errfile,
\'line\' => $errline
);
return false;
'
)
);
function error_get_last() {
global $__error_get_last_retval__;
if( !isset($__error_get_last_retval__) ) {
return null;
}
return $__error_get_last_retval__;
}
}
?>
vike2000 at google mail domain ¶
11 years ago
To know if something happened between two statements one can of course use a special string with user_error() (in lieu of a built-in special reset mentioned by mail at mbaierl dot com): <?php
@user_error($error_get_last_mark='error_get_last mark');
$not_set;
$error_get_last=error_get_last();
$something_happened=($error_get_last['message']!=$error_get_last_mark); ?>
If your <?php set_error_handler(function) ?> function returns true then you'll have to roll you own error_get_last functionality. (Shortly mentioned by dmgx dot michael at gmail dot com).
To manual moderators: Re php.net/manual/add-note.php: Since i guess the above technically sorts under "References to other notes" i feel the need to defend myself with that i'm thinking it might show for usability where other's say it fails and no, i haven't got any other medium to reach the readers of the php manual notes.
Also, you could have some examples of what notes you think is okay. Thanks for your moderation.
Brad ¶
16 years ago
Like $php_errormsg, the return value of this function may not be updated if a user-defined error handler returns non-FALSE. Tested on PHP 5.2.6.
<?php
var_dump(PHP_VERSION);
// Outputs: string(5) "5.2.6"
@trigger_error("foo");
$e=error_get_last();
var_dump($e['message']);
// Outputs: string(3) "foo"
set_error_handler(create_function('$a,$b',''));
@trigger_error("bar");
$e=error_get_last();
var_dump($e['message']);
// Outputs: string(3) "foo"
set_error_handler(create_function('$a,$b','return false;'));
@trigger_error("baz");
$e=error_get_last();
var_dump($e['message']);
// Outputs: string(3) "baz"
?>
Brad ¶
16 years ago
It can't be completely reset, but you can "clear" it well enough for all practical purposes:
<?php
@trigger_error("");
// do stuff...
$e=error_get_last();
if($e['message']!==''){
// An error occurred
}
?>
Krzysztof Przygoda ¶
1 year ago
Be aware that error_get_last() returns only uncaught errors.
Caught ones will never get to the error_get_last(), i.e.:
- $error_levels registered with set_error_handler() when $callback does not return false,
- all exceptions, including errors not supported by set_error_handler() (like :E_ERROR/fatal error, E_PARSE, etc.) that are exceptions in fact,
when set_exception_handler($callback) is registered,
- exceptions caught by try/catch block.
admin at manomite dot net ¶
7 years ago
This is a simple debugging script for mail functions...
<?php
//Built By Manomite for Debugging
class Error{
function __construct(){
error_reporting ( E_ALL ^ E_NOTICE );
$err = error_get_last ();
if($err){
$res = "An error has occurred in your application sir.\n Details Include " .$err.""
mail("admin@manomite.net","Error Occurred",$res,$from);
}
}
}
?>
scott at eyefruit dot com ¶
14 years ago
If you have the need to check whether an error was a fatal error before PHP 5.2 (in my case, within an output buffer handler), you can use the following hack:
<?php
# Check if there was a PHP fatal error.
# Using error_get_last is the "right" way, but it requires PHP 5.2+. The back-up is a hack.
if (function_exists('error_get_last')) {
$lastPHPError = error_get_last();
$phpFatalError = isset($lastPHPError) && $lastPHPError['type'] === E_ERROR;
} else {
$phpFatalError = strstr($output, '<b>Fatal error</b>:') && ! strstr($output, '</html>');
}
?>
This is, of course, language-dependent, so it wouldn't be good in widely-distributed code, but it may help in certain cases (or at least be the base of something that would work).
phil at wisb dot net ¶
16 years ago
While mail at mbaierl dot com makes the point that this function isn't best for reporting the possible error condition of the most recently executed step, there are situations in which it is especially helpful to know the last error—regardless of when it occurred.
As an example, imagine if you had some code that captured the output from dynamic pages, and cached it for faster delivery to subsequent visitors. A final sanity check would be to see if an error has occurred anywhere during the execution of the script. If there has been an error, we probably don't want to cache that page.