Question

what is concatenation? Do we need string concatenation for calculations of mathematical operations?
Introduction To Visual Basic

Answer 1

Explanation:

$a = 1;

$b = 2;

echo "$a * $b = " . $a * $b;

echo "<br />";

echo "$a / $b = " . $a / $b;

echo "<br />";

echo "$a + $b = " . $a + $b;

echo "<br />";

echo "$a - $b = " . $a - $b;

echo "<br />";