Why echo " all statement";

Question

the output will be wrong in real editors should use concatenation

Answer 1

The PHP concatenation is a dot(.)

Example :

$a = 5;
$b = 6;
$r = $a + $b;

echo "The sum of ". $a . " and " . $b . " is = " . $r;

Answer 2

thanks that's what I am talking about so the syntax shown in the course is wrong