2024-05-06 20:40:05 +00:00
|
|
|
---
|
2024-10-30 17:34:11 +00:00
|
|
|
date: 2020-11-11
|
2024-05-06 20:40:05 +00:00
|
|
|
id: d4bcfd55-088e-4658-9e7b-5429f7ec060f
|
|
|
|
|
title: PHP Throw Expression
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
# Description
|
|
|
|
|
|
|
|
|
|
Since [PHP 8.0](20201109133834-php_8_0), `throw` can also be used as an
|
|
|
|
|
expression[^1].
|
|
|
|
|
|
|
|
|
|
# Syntax
|
|
|
|
|
|
|
|
|
|
``` php
|
|
|
|
|
// This was previously not possible since arrow functions only accept a single expression while throw was a statement.
|
|
|
|
|
$callable = fn() => throw new Exception();
|
|
|
|
|
|
|
|
|
|
// $value is non-nullable.
|
|
|
|
|
$value = $nullableValue ?? throw new InvalidArgumentException();
|
|
|
|
|
|
|
|
|
|
// $value is truthy.
|
|
|
|
|
$value = $falsableValue ?: throw new InvalidArgumentException();
|
|
|
|
|
|
|
|
|
|
// $value is only set if the array is not empty.
|
|
|
|
|
$value = !empty($array)
|
|
|
|
|
? reset($array)
|
|
|
|
|
: throw new InvalidArgumentException();
|
|
|
|
|
|
|
|
|
|
$condition && throw new Exception();
|
|
|
|
|
$condition || throw new Exception();
|
|
|
|
|
$condition and throw new Exception();
|
|
|
|
|
$condition or throw new Exception();
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
# Footnotes
|
|
|
|
|
|
|
|
|
|
[^1]: <https://wiki.php.net/rfc/throw_expression>
|
