The restore_exception_handler Function

The restore_exception_handler function restores the previous exception handler, which was replaced using set_exception_handler. This function does not accept parameters and does not return values.

Syntax

phprestore_exception_handler();

Example

Let's set a custom exception handler and then restore the previous one:

php<?php
  function customExceptionHandler($exception) {
    echo 'Custom handler: ' . $exception->getMessage();
  }
  
  set_exception_handler('customExceptionHandler');
  restore_exception_handler();
?>

Example

Let's verify that after restoring the handler, the standard mechanism works:

php<?php
  set_exception_handler(function($exception) {
    echo 'Handler 1: ' . $exception->getMessage();
  });
  
  set_exception_handler(function($exception) {
    echo 'Handler 2: ' . $exception->getMessage();
  });
  
  restore_exception_handler();
  throw new Exception('Test error');
?>

Code execution result:

php'Handler 1: Test error'