From the June 2015 Issue of Prestwood eMag
PHP Beginners Corner:
PHP Logical Operators (and, &&, or, ||, !, Xor)
Posted
15 years ago on 2/11/2009
PHP Code Snippet:
KB101888
Languages Focus: Logical Operators 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.
PHP Logical Operators 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. };
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Code Contributed By Mike Prestwood:
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