debug_print_backtrace
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.
error_get_last
(PHP 5 >= 5.2.0)
error_get_last — Obtém o último erro ocorrido
Descrição
array error_get_last
( void
)
Obtém informação sobre o último erro que ocorreu.
Valor Retornado
Retorna um array associativo descrevendo o último erro com chaves "type", "message", "file" e "line". Retorna NULL se não tiver ocorrido um erro até a chamada da função.
Exemplos
Exemplo #1 Um exemplo da error_get_last()
<?php
echo $a;
print_r(error_get_last());
?>
O exemplo acima irá imprimir algo similar a:
Array
(
[type] => 8
[message] => Undefined variable: a
[file] => C:\WWW\index.php
[line] => 2
)
add a note
User Contributed Noteserror_get_last
iant at clickwt dot com
05-Nov-2009 05:13
05-Nov-2009 05:13
michael at getsprink dot com
10-Aug-2009 05:15
10-Aug-2009 05:15
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...";
}
}
?>
phil at wisb dot net
05-Dec-2008 12:12
05-Dec-2008 12:12
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.
Brad
16-Jun-2008 06:54
16-Jun-2008 06:54
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-Jun-2008 06:36
16-Jun-2008 06:36
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
}
?>
mail at mbaierl dot com
04-Jun-2008 12:21
04-Jun-2008 12:21
This function is pretty useless, as it can not be reset, so there is no way to know if the error really happened on the line before this function call.