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Top Forums Shell Programming and Scripting Condition checking issue while if Post 302834525 by Don Cragun on Friday 19th of July 2013 06:21:05 AM
Old 07-19-2013
Quote:
Originally Posted by lovelysethii
i actually don't know the difference between && and ||. can you please elaborate.
test1 && test2 evaluates to TRUE if test1 evaluates to TRUE and test2 evaluates to TRUE. (Note that test2 won't be evaluated if test1 evaluates to FALSE.)

test1 || test2 evaluates to TRUE if test1 evaluates to TRUE or test2 evaluates to TRUE, or both evaluate to TRUE. (Note that test2 won't be evaluated if test1 evaluates to TRUE.)
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VARIANT_IMP(3)								 1							    VARIANT_IMP(3)

variant_imp - Performs a bitwise implication on two variants

SYNOPSIS
mixed variant_imp (mixed $left, mixed $right) DESCRIPTION
Performs a bitwise implication operation. PARAMETERS
o $left - The left operand. o $right - The right operand. 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(3) in PHP cor- responds to VarAdd() in the MSDN documentation. RETURN VALUES
Variant Implication Table +------------+--------------------+---+ |If $left is | | | | | | | | | If $right is | | | | | | | | then the result is | | | | | | +------------+--------------------+---+ | | | | | TRUE | | | | | | | | | | | | | TRUE | | | | | | | | | | | | TRUE | | | | | | | | | | | TRUE | | | | | | | | | | | | | FALSE | | | | | | | | | | | | TRUE | | | | | | | | | | | TRUE | | | | | | | | | | | | | NULL | | | | | | | | | | | | TRUE | | | | | | | | | | | FALSE | | | | | | | | | | | | | TRUE | | | | | | | | | | | | TRUE | | | | | | | | | | | FALSE | | | | | | | | | | | | | FALSE | | | | | | | | | | | | TRUE | | | | | | | | | | | FALSE | | | | | | | | | | | | | NULL | | | | | | | | | | | | TRUE | | | | | | | | | | | NULL | | | | | | | | | | | | | TRUE | | | | | | | | | | | | TRUE | | | | | | | | | | | NULL | | | | | | | | | | | | | FALSE | | | | | | | | | | | | NULL | | | | | | | | | | | NULL | | | | | | | | | | | | | NULL | | | | | | | | | | | | NULL | | | | | | +------------+--------------------+---+ PHP Documentation Group VARIANT_IMP(3)
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