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Описание

mixed variant_mul ( mixed $left , mixed $right )

Multiplies left by right .

Список параметров

left: The left operand.
right: The right operand.

Boolean values are converted to -1 for FALSE and 0 for TRUE.

Замечание: As with all the variant arithmetic functions, the parameters for this function can be either a PHP native type (integer, string, floating point, boolean or NULL), or an instance of a COM, VARIANT or DOTNET class. PHP native types will be converted to variants using the same rules as found in the constructor for the VARIANT class. COM and DOTNET objects will have the value of their default property taken and used as the variant value.
The variant arithmetic functions are wrappers around the similarly named functions in the COM library; for more information on these functions, consult the MSDN library. The PHP functions are named slightly differently; for example variant_add() in PHP corresponds to VarAdd() in the MSDN documentation.

Возвращаемые значения

**Variant Multiplication Rules**
If	Then
Both expressions are of the string, date, character, boolean type	Multiplication
One expression is a string type and the other a character	Multiplication
One expression is numeric and the other is a string	Multiplication
Both expressions are numeric	Multiplication
Either expression is NULL	NULL is returned
Both expressions are empty	Empty string is returned

Смотрите также

variant_div() - Returns the result from dividing two variants
variant_idiv() - Converts variants to integers and then returns the result from dividing them