(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()).
У цієї функції немає параметрів.
Приклад #1 Exception::getPrevious() example
Looping over, and printing out, exception trace.
<?php
class 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());
}
?>Поданий вище приклад виведе щось схоже на:
/home/bjori/ex.php:8 Something happened (911) [MyCustomException] /home/bjori/ex.php:6 You are doing it wrong! (112) [InvalidArgumentException]
/** * Gets sequential array of all previously-chained errors * * @param Throwable $error * * @return Throwable[] */ function getChain(Throwable $error) : array { $chain = []; do { $chain[] = $error; } while ($error = $error->getPrevious()); return $chain; }