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Throwable

(PHP 7, PHP 8)

简介

Throwable 是能被 throw 语句抛出的最基本的接口（interface），包含了 Error 和 Exception 。

注意:
PHP 类无法直接实现（implement） Throwable 接口，而应当去继承 Exception。

接口摘要

interface Throwable extends Stringable {

/* 方法 */

public getMessage(): string

public getCode(): int

public getFile(): string

public getLine(): int

public getTrace(): array

public getTraceAsString(): string

public getPrevious(): ?Throwable

public __toString(): string

/* 继承的方法 */

public Stringable::__toString(): string

}

更新日志

版本	说明
8.0.0	现在 Throwable 实现了 Stringable。

目录

Throwable::getMessage — 获取信息
Throwable::getCode — 获取异常代码
Throwable::getFile — 获取创建对象的文件
Throwable::getLine — 获取初始化对象时候的行号
Throwable::getTrace — 获取堆栈踪迹（Stack Trace）
Throwable::getTraceAsString — 以 string 形式获取堆栈踪迹
Throwable::getPrevious — 返回先前的 Throwable
Throwable::__toString — 获取 Throwable 对象 string 形式的表达

User Contributed Notes 2 notes

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84

mlocati at gmail dot com ¶

6 years ago

I wrote a simple script that prints out the Throwable and Exception tree for every PHP version.

You can find this script here:
https://gist.github.com/mlocati/249f07b074a0de339d4d1ca980848e6a

And its output is here:
https://3v4l.org/sDMsv

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4

thisbug at foxmail dot com ¶

3 years ago

try {
// Code that may throw an Exception or Error.
} catch (Throwable $t) {
// Executed only in PHP 7, will not match in PHP 5.x
} catch (Exception $e) {
// Executed only in PHP 5.x, will not be reached in PHP 7
}

interface MyPackageThrowable extends Throwable {}

class MyPackageException extends Exception implements MyPackageThrowable {}

throw new MyPackageException();