PHP 5, PHP 7, PHP 8
set_exception_handler - Sets a user-defined exception handler function
Code Examples

set_exception_handler( callable|null$callback ): callable|null

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



The function to be called when an uncaught exception occurs. This handler function needs to accept one parameter, which will be the Throwable object that was thrown. Both Error and Exception implement the Throwable interface. This is the handler signature:

handler( Throwable$ex ): void

null may be passed instead, to reset this handler to its default state.

Return Values

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

Related Functions

Example of set_exception_handler

Show all examples for set_exception_handler

PHP Version:

Function set_exception_handler:

Error Handling and Logging Functions

Most used PHP functions