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PHP PHP Functions Function Returns and More Returning Values

Miguel Nunez
Miguel Nunez
3,266 Points

What's the difference between an echo and a return.?

I notice some examples like for example math situations will tend to give me a situation that equals the answer so for example 1+1= 2 I notice echo and a return gives the same answer and response when I see an execution of it if they as so different what are they doing given the same results and same effects why would I bother with a return if I can just do the same thing with just use an echo all the time.

Jesus Mendoza
Jesus Mendoza
23,288 Points
  • "echo" prints the result on screen and you can't do anything with that value, its just printed on screen.
  • "return" returns it from the function and you can do whatever you need with that value. I don't know much about PHP but in JavaScript you can store that value in a variable and use it later, pass it to another function, etc.
Aayatullah Miyan
Aayatullah Miyan
4,687 Points

At first part the value is passed from addup(10,15) to the addup($a,$b). Then the sum is done in $c and it is echoed. In secord part, the value is passed from multi(10,15) to the multi($num1,$num2) then the product is returned using return to multi() in the line containing echo "<br> The value of the product is". multi(10,15) making it echo the product.

function addup($a,$b){
echo $c." This is the sum";
function multi($num1,$num2){
  return $num1*$num2;
echo "<br>The value of the product is " .multi(10,15);