International PHP Conference Berlin 2025

variant_set_type

(PHP 5, PHP 7, PHP 8)

variant_set_typevariant を「その場で」別の型に変換する

説明

variant_set_type(variant $variant, int $type): void

この関数は variant_cast() に似ていますが、 「その場で」変換されるという点が異なります。新しい variant は 作成されません。この関数に渡すパラメータの意味は variant_cast() の場合と同じです。

パラメータ

variant

variant。

type

戻り値

値を返しません。

参考

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martin at itmission dot com
15 years ago
In my application I was using ADODB to retrieve data from Microsoft Access. During queries, fields defined as "Date/Time" in Access were being returned to PHP as instances of the Variant class.

For some reason, the variant_date_to_timestamp function returned incorrect timestamps. As a workaround, I used variant_set_type($variant, VT_BSTR) to get a string representation of the date. This can be used for most variant types PHP doesn't handle.
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