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variant_div

(PHP 5, PHP 7, PHP 8)

variant_div — Returns the result from dividing two variants

说明

variant_div(mixed $left, mixed $right): variant

Divides left by right and returns the result.

参数

left

The left operand.

right

The right operand.

注意:

对于所有变量运算函数，本函数的参数可以是 PHP 内置的类型（整数，字符串，浮点数，布尔型或者 null），或者是一个 COM，VARIANT 或者 DOTNET 类的实例。PHP 内置类型将会使用和构造variant类相同的规则转换成变量。COM 和 DOTNET 对象的值将会取其默认属性并被当成变量值使用。

变量运算函数是同名函数在 COM 库中的外包；有关此类函数的更多信息参见 MSDN 库。PHP 函数命名有少许区别，例如 PHP 中的 variant_add() 对应于 MSDN 文档中的 VarAdd()。

返回值

Variant Division Rules
If Then
Both expressions are of the string, date, character, boolean type Double is returned
One expression is a string type and the other a character Division and a double is returned
One expression is numeric and the other is a string Division and a double is returned.
Both expressions are numeric Division and a double is returned
Either expression is NULL NULL is returned
right is empty and left is anything but empty A com_exception with code DISP_E_DIVBYZERO is thrown
left is empty and right is anything but empty. 0 as type double is returned
Both expressions are empty A com_exception with code DISP_E_OVERFLOW is thrown

错误／异常

Throws a com_exception on failure.

参见