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variant_imp

Performs a bitwise implication on two variants (PHP 5)
mixed variant_imp ( mixed left, mixed right )

Performs a bitwise implication operation, according to the following truth table:

Table 33. Variant Implication Table

If left isIf right isthen the result is
TRUETRUETRUE
TRUEFALSETRUE
TRUENULLTRUE
FALSETRUETRUE
FALSEFALSETRUE
FALSENULLTRUE
NULLTRUETRUE
NULLFALSENULL
NULLNULLNULL


Note:

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.