2024-05-06 20:40:05 +00:00
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---
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2024-10-29 18:27:12 +00:00
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date: 2020-11-11
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2024-05-06 20:40:05 +00:00
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id: d4bcfd55-088e-4658-9e7b-5429f7ec060f
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title: PHP Throw Expression
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---
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# Description
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Since [PHP 8.0](20201109133834-php_8_0), `throw` can also be used as an
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expression[^1].
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# Syntax
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``` php
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// This was previously not possible since arrow functions only accept a single expression while throw was a statement.
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$callable = fn() => throw new Exception();
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// $value is non-nullable.
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$value = $nullableValue ?? throw new InvalidArgumentException();
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// $value is truthy.
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$value = $falsableValue ?: throw new InvalidArgumentException();
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// $value is only set if the array is not empty.
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$value = !empty($array)
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? reset($array)
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: throw new InvalidArgumentException();
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$condition && throw new Exception();
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$condition || throw new Exception();
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$condition and throw new Exception();
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$condition or throw new Exception();
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```
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# Footnotes
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[^1]: <https://wiki.php.net/rfc/throw_expression>
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