php restore_error_handler() function and restore_exception_handler() function

restore_error_handler— Restore the previouserror handlingFunction

Description

bool restore_error_handler ( void )

Change the error usingset_error_handler() After handling the function, this function can be used to restore the previous error handler (either a built-in or a user-defined function).

Return value

This function always returns TRUE.

restore_error_handler() example

If unserialize() causes an error, the original error handling function will be restored.

The above routine will output:

Invalid serialized value.

restore_exception_handler- Restore the previously definedException handlingfunction.

Description

bool restore_exception_handler ( void )

After usingset_exception_handler() to change the exception handling function, this function can be used to restore the previous exception handler (can be built-in or is a user-defined function).

Return value

This function always returns TRUE.

restore_exception_handler() function example

 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 routine will output:

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

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