variant_div()
(PHP 5, PHP 7)
Returns the result from dividing two variants
说明
variant_div(mixed $left, mixed $right): variant
Divides$leftby$rightand returns the result.
参数
- $left
The left operand.
- $right
The right operand.
Note: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
| 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 |
| $rightis empty and$leftis anything but empty | A com_exception with code DISP_E_DIVBYZERO is thrown |
| $leftis empty and$rightis 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
variant_idiv()Converts variants to integers and then returns the result from dividing them