restore_exception_handler

(PHP 5)

restore_exception_handler — Restores the previously defined exception handler function

说明

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).

返回值

This function always returns TRUE.

范例

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...');
?>

以上例程会输出：

[exception_handler_1] This triggers the first exception handler...

参见

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