Concatenate two variables to obtain one

Question

How to concatenate two variables to obtain something like this?

$var = "sss";
$i = 5;
${$var.$i} = "eeee"; // I know this is not correct, What should be here
echo $var5;

So here i need to obtain variables $var1 $var2 $var3 $var4 ... dynamically.

Answer 1

You should consider using arrays instead, as those dynamic variables tend to only cause harm.

But basically what you do is syntactically correct, it should work.

${'var' . $i} = 'eeee'; // sets $var5
${$var . $i} = 'eeee'; // sets $sss5

Answer 2

$i = 5;
$var[$i] = "eeee";
echo $var[$i];