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► KB ► To/From Guides ► C# ► Commands

Logical Operators (Cross Ref > Commands)

By Mike Prestwood

C# versus PHP: A side by side comparison between C# and PHP.

Operators

A language symbol used for assignment, comparison, computational, or as a logical.

Logical Operators

[Other Languages]

Languages Focus

Logical operators perform conditional and, or, and not operations. Some languages support both binary logical operators that link two and unary logical operators negate (make opposite) the truth value of its argument. Finally, some languages short circuit logic. For example, with this or that, if this is an expression returning true, then that is never executed.

C#:

Same as C++ and Java. C# logical operators:

&	and, as in this and that	No Short Circuit
&&	and, as in this and that	short circuits
\|	or, as in this or that	No Short Circuit
\|\|	or, as in this or that	short circuits
!	Not, as in Not This
^	either or, as in this or that but not both

Syntax Example:

//Given expressions a, b, c, and d:

if !((a && b) && (c || d))

  //Do something.

PHP: and, &&, or, ||, !, Xor

PHP logical operators:

and, &&	and, as in this and that
or, \|\|	or, as in this or that
!	Not, as in Not This
Xor	either or, as in this or that but not both

Syntax Example:

#Given expressions a, b, c, and d:

if !((a && b) && (c || d)) {

  #Do something.

};