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.)
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT PHP
variant_imp
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)