set_exception_handler

(PHP 5)

set_exception_handler — Sets a user-defined exception handler function

说明

string set_exception_handler ( callback $exception_handler )

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

参数

exception_handler: Name of the function to be called when an uncaught exception occurs. This function must be defined before calling set_exception_handler(). This handler function needs to accept one parameter, which will be the exception object that was thrown.

返回值

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

范例

Example#1 set_exception_handler() example


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

set_exception_handler('exception_handler');

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

参见

restore_exception_handler(), restore_error_handler(), error_reporting(), 有关 callback 类型的信息, 和 PHP 5 Exceptions.


	PHP5中文手册 set_error_handler trigger_error Errors and Logging PHP Manual set_exception_handler (PHP 5) set_exception_handler — Sets a user-defined exception handler function 说明 string set_exception_handler ( callback `$exception_handler` ) Sets the default exception handler if an exception is not caught within a try/catch block. Execution will stop after the `exception_handler` is called. 参数 `exception_handler` Name of the function to be called when an uncaught exception occurs. This function must be defined before calling set_exception_handler(). This handler function needs to accept one parameter, which will be the exception object that was thrown. 返回值 Returns the name of the previously defined exception handler, or `NULL` on error. If no previous handler was defined, `NULL` is also returned. 范例 Example#1 set_exception_handler() example `<?php function exception_handler($exception) { echo "Uncaught exception: " , $exception->getMessage(), "\n"; } set_exception_handler('exception_handler'); throw new Exception('Uncaught Exception'); echo "Not Executed\n"; ?>` 参见 restore_exception_handler(), restore_error_handler(), error_reporting(), 有关 callback 类型的信息, 和 PHP 5 Exceptions. set_error_handler trigger_error Errors and Logging PHP Manual