CascadiaPHP 2024

Исключение Exception

(PHP 5, PHP 7, PHP 8)

Введение

Класс Exception — базовый класс для всех пользовательских исключений.

Обзор класса

class Exception implements Throwable {
/* Свойства */
protected string $message = "";
private string $string = "";
protected int $code;
protected string $file = "";
protected int $line;
private array $trace = [];
private ?Throwable $previous = null;
/* Методы */
public __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
final public getMessage(): string
final public getPrevious(): ?Throwable
final public getCode(): int
final public getFile(): string
final public getLine(): int
final public getTrace(): array
final public getTraceAsString(): string
public __toString(): string
private __clone(): void
}

Свойства

message

Текст исключения

code

Код исключения

file

Имя файла, в котором было вызвано исключение

line

Номер строки, в которой было вызвано исключение

previous

Ранее выброшенное исключение

string

Строковое представление трассировки стека

trace

Трассировка стека в виде массива

Содержание

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User Contributed Notes 3 notes

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96
whysteepy at gmail dot com
6 years ago
Lists of Throwable and Exception tree as of 7.2.0

Error
ArithmeticError
DivisionByZeroError
AssertionError
ParseError
TypeError
ArgumentCountError
Exception
ClosedGeneratorException
DOMException
ErrorException
IntlException
LogicException
BadFunctionCallException
BadMethodCallException
DomainException
InvalidArgumentException
LengthException
OutOfRangeException
PharException
ReflectionException
RuntimeException
OutOfBoundsException
OverflowException
PDOException
RangeException
UnderflowException
UnexpectedValueException
SodiumException

Find the script and output in the following links:
https://gist.github.com/mlocati/249f07b074a0de339d4d1ca980848e6a
https://3v4l.org/sDMsv

posted by someone here http://php.net/manual/en/class.throwable.php
up
34
cHao
9 years ago
Note that an exception's properties are populated when the exception is *created*, not when it is thrown. Throwing the exception does not seem to modify them.

Among other things, this means:

* The exception will blame the line that created it, not the line that threw it.

* Unlike in some other languages, rethrowing an exception doesn't muck up the trace.

* A thrown exception and an unthrown one look basically identical. On my machine, the only visible difference is that a thrown exception has an `xdebug_message` property while an unthrown one doesn't. Of course, if you don't have xdebug installed, you won't even get that.
up
4
shaman_master at list dot ru
4 years ago
Note: this documentation not full, ReflectionObject::export($exception):
<?php
Object of
class [ class Exception implements Throwable ] {
-
Properties [7] {
Property [ protected $message ]
Property [ private $string ]
Property [ protected $code ]
Property [ protected $file ]
Property [ protected $line ]
Property [ private $trace ]
Property [ private $previous ]
}
-
Methods [11] {
Method [ final private method __clone ] {
}

Method [ public method __construct ] {

-
Parameters [3] {
Parameter #0 [ $message ]
Parameter #1 [ $code ]
Parameter #2 [ $previous ]
}
}

Method [ public method __wakeup ] {
}

Method [ final public method getMessage ] {
}

Method [ final public method getCode ] {
}

Method [ final public method getFile ] {
}

Method [ final public method getLine ] {
}

Method [ final public method getTrace ] {
}

Method [ final public method getPrevious ] {
}

Method [ final public method getTraceAsString ] {
}

Method [ public method __toString ] {
}
}
}
?>

Missed:

Property [ private $string ]
Property [ private $trace ]
Property [ private $previous ]

Method [ public method __wakeup ] {
}
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