The following are Logical Operators:

$a and $b And TRUE if both $a and $b are TRUE.
$a or $b Or TRUE if either $a or $b is TRUE.
$a xor $b Xor TRUE if either $a or $b is TRUE,but not both.
! $a Not TRUE if $a is not TRUE.
$a && $b And TRUE if both $a and $b are TRUE.
$a || $b Or TRUE if either $a or $b is TRUE.

Example1:
Code:

$a=5;
$b=7;
if($a and $b ==5)
{
echo "Right Input"."
"; } else { echo "wrong Input"."
"; } Output: wrong Input Example2: Code:
$a=5;
$b=7;

if($a or $b ==5)
{
echo "Right Input"."
"; } else { echo "wrong Input"."
"; }

Output:

Right Input

Example3:
Code:

$a=5;
$b=7;

if(!($a==$b))
{

echo "Right";
}

else
{
echo "wrong";
}

Output:

Right

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