temp question

Question

what does temp = "7" temp += "2" puts temp in php mean?

Answer 1

temp is a variable which holds value 7

temp += "2" means temp = temp + "2" = "7" + "2" = 72

Answer 2

Jennifer, In PHP your data automatically transfers!

$temp = "7";
$temp += "2";
echo $temp;
This results your temp variable to become 9! So it outputs 9.

But in other languages, like JavaScript, Java, C#, and... your data won't change and it stays as string, so they result in 72.