(PHP 5 >= 5.3.0, PHP 7, PHP 8)
Exception::getPrevious — Returns previous Throwable
Returns previous Throwable (which had been passed as the third parameter of Exception::__construct()).
This function has no parameters.
Returns the previous Throwable if available
or null
otherwise.
Example #1 Exception::getPrevious() example
Looping over, and printing out, exception trace.
<?phpclass MyCustomException extends Exception {}function doStuff() { try { throw new InvalidArgumentException("You are doing it wrong!", 112); } catch(Exception $e) { throw new MyCustomException("Something happened", 911, $e); }}try { doStuff();} catch(Exception $e) { do { printf("%s:%d %s (%d) [%s]\n", $e->getFile(), $e->getLine(), $e->getMessage(), $e->getCode(), get_class($e)); } while($e = $e->getPrevious());}?>
The above example will output something similar to:
/home/bjori/ex.php:8 Something happened (911) [MyCustomException] /home/bjori/ex.php:6 You are doing it wrong! (112) [InvalidArgumentException]