PHP 5, PHP 7, PHP 8
set_exception_handler - Sets a user-defined exception handler function
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.
Returns the previously defined exception handler, or null on error. If no previous handler was defined, null is also returned.
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