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eternalfire2018-04-12 15:26:45
PHP
eternalfire, 2018-04-12 15:26:45

What does such a record mean?

What does this parameter passing mean?

public static function getDate(?string $key_transfer_date): ?string
    {

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Lazy @BojackHorseman PHP, 2018-04-12
@eternalfire

null or string

K
KTF, 2018-04-13
@KTF

php.net/manual/en/migration71.new-features.php

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