Question

im confuse that…

like example:

$Q1 = "hello";
$Q2 = "world";
$Q3 = "StackOverflow";

$i = 1;

while($i < 3) {
  $a = "$Q".$i; //I think this is wrong.    
  echo $a; // i tried ${$a} doesn't work =/

  $i++;
}

then output format:

$Q1
$Q2
$Q3

but there is not output like this:
hello
world
StackOverflow

I want like $Q + $i become $Q1 to answer is: “hello”…

Answer 1

$varName = 'Q'.$i;
$a .= $$varName; 

Or just

echo $$varName . "<br>\n";