Throwable::getPrevious

(PHP 7, PHP 8)

Throwable::getPrevious返回先前的 Throwable

说明

public Throwable::getPrevious(): ?Throwable

返回任意一个先前的错误 (例如, Exception::__construct()中提供的第三个参数)。

参数

此函数没有参数。

返回值

如果有的话,返回先前的 Throwable,否则就返回 null

参见

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User Contributed Notes 1 note

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harry at upmind dot com
5 years ago
/**
* 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;
}
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