set_exception_handler(3) [php man page]

SET_EXCEPTION_HANDLER(3)						 1						  SET_EXCEPTION_HANDLER(3)

set_exception_handler - Sets a user-defined exception handler function

SYNOPSIS

       callable set_exception_handler (callable  $exception_handler)

DESCRIPTION

	Sets  the  default exception handler if an exception is not caught within a try/catch block. Execution will stop after the $exception_han-
       dler is called.

PARAMETERS

	      o $exception_handler
		- Name of the function to be called when an uncaught exception occurs. This handler function needs to accept one parameter,  which
		will be the exception object that was thrown. This is the handler signature:
		void handler (Exception  $ex) NULL may be passed instead, to reset this handler to its default state.

	      Caution

		      Note  that  providing  an  explicit  Exception  type  hint for the $ex parameter in your callback will cause issues with the
		     changed exception hierarchy in PHP 7.

RETURN VALUES

	Returns the name of the previously defined exception handler, or NULL on error. If no previous handler was defined, NULL is also returned.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.5.0	|						    |
       |	|						    |
       |	|  Previously, if NULL was passed then	this  func- |
       |	| tion	returned TRUE. It returns the previous han- |
       |	| dler since PHP 5.5.0. 			    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      set_exception_handler(3) example

	      <?php
	      function exception_handler($exception) {
		echo "Uncaught exception: " , $exception->getMessage(), "
";
	      }

	      set_exception_handler('exception_handler');

	      throw new Exception('Uncaught Exception');
	      echo "Not Executed
";
	      ?>

SEE ALSO

       restore_exception_handler(3), restore_error_handler(3), error_reporting(3), information about the callback type, PHP 5 Exceptions.

PHP Documentation Group 												  SET_EXCEPTION_HANDLER(3)

MPI_File_create_errhandler(3OpenMPI)									      MPI_File_create_errhandler(3OpenMPI)

NAME

       MPI_File_create_errhandler  - Creates an MPI-style error handler that can be attached to a file.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_File_create_errhandler(MPI_File_errhandler_fn *function,
	    MPI_Errhandler *errhandler)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_FILE_CREATE_ERRHANDLER(FUNCTION, ERRHANDLER, IERROR)
	    EXTERNAL  FUNCTION
	    INTEGER   ERRHANDLER, IERROR

C++ Syntax
       #include <mpi.h> static MPI::Errhandler	    MPI::File::Create_errhandler(MPI::File::Errhandler_fn*	function)

INPUT PARAMETER

       function  User-defined error handling procedure (function).

OUTPUT PARAMETERS

       errhandler
		 MPI error handler (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Registers  the  user  routine function for use as an MPI exception handler. Returns in errhandler a handle to the registered exception han-
       dler.

       In the C language, the user routine function should be a C function of type MPI_File_errhandler_fn, which is defined as

	   typedef void (MPI_File_errhandler_fn)(MPI_File *, int *,
	   ...);

       The first argument to function is the file in use. The second is the error code to be returned by the MPI routine that raised the error.

       In the Fortran language, the user routine should be of the form:

	   SUBROUTINE FILE_ERRHANDLER_FN(FILE, ERROR_CODE, ...)
	       INTEGER FILE, ERROR_CODE

       In C++, the user routine function should be of the form:

	   typedef void MPI::File::Errhandler_fn(MPI::File &, int *,
	   ...);

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions  do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       Before the error value is returned, the current MPI error handler is called. For MPI I/O function errors, the default error handler is  set
       to  MPI_ERRORS_RETURN. The error handler may be changed with MPI_File_set_errhandler; the predefined error handler MPI_ERRORS_ARE_FATAL may
       be used to make I/O errors fatal. Note that MPI does not guarantee that an MPI program can continue past an error.

Open MPI 1.2							  September 2006			      MPI_File_create_errhandler(3OpenMPI)