title: Concatenate two variables to obtain one
body: <p>How to concatenate two variables to obtain something like this?</p>
  
  <pre><code>$var = "sss";
  $i = 5;
  ${$var.$i} = "eeee"; // I know this is not correct, What should be here
  echo $var5;
  </code></pre>
  
  <p>So here i need to obtain variables $var1  $var2  $var3  $var4 ... dynamically. </p>