restore_exception_handler
(PHP 5)
restore_exception_handler — Restores the previously defined exception handler function
Description
bool restore_exception_handler
( void
)
Used after changing the exception handler function using set_exception_handler(), to revert to the previous exception handler (which could be the built-in or a user defined function).
Return Values
This function always returns TRUE.
Examples
Example #1 restore_exception_handler() example
<?php
function exception_handler_1(Exception $e)
{
echo '[' . __FUNCTION__ . '] ' . $e->getMessage();
}
function exception_handler_2(Exception $e)
{
echo '[' . __FUNCTION__ . '] ' . $e->getMessage();
}
set_exception_handler('exception_handler_1');
set_exception_handler('exception_handler_2');
restore_exception_handler();
throw new Exception('This triggers the first exception handler...');
?>
The above example will output:
[exception_handler_1] This triggers the first exception handler...
See Also
- set_exception_handler() - Sets a user-defined exception handler function
- set_error_handler() - Sets a user-defined error handler function
- restore_error_handler() - Restores the previous error handler function
- error_reporting() - Sets which PHP errors are reported
Коментарии
Note that this does not work within an exception handler.
e.g.
<?php
function handler1(Exception $e) {
echo "handler1\n";
restore_exception_handler();
throw $e;
}
function handler2(Exception $e) {
echo "handler2\n";
}
set_exception_handler( 'handler2' );
set_exception_handler( 'handler1' );
throw new Exception( 'might expect to see handler1, handler2' );
/* Outputs:
handler1
PHP Fatal error: Uncaught exception 'Exception' with message 'might expect to see handler1, handler2' in /tmp/demo.php:15
Stack trace:
#0 {main}
thrown in /tmp/demo.php on line 15
*/
?>