variant_set_type

(PHP 5, PHP 7, PHP 8)

variant_set_type — Convert a variant into another type "in-place"

说明

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

This function is similar to variant_cast() except that the variant is modified "in-place"; no new variant is created. The parameters for this function have identical meaning to those of variant_cast().

参数

variant: The variant.
type

返回值

没有返回值。

参见

variant_cast() - Convert a variant into a new variant object of another type
variant_get_type() - Returns the type of a variant object

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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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备份地址：http://www.lvesu.com/blog/php/function.variant-set-type.php