Language Basics Php

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  4. Calculate the variable name for simpler variables and use that name to access the value of that variable
$a0 = 'This';
$a1 = 'is';
$a2 = 'a';
$a3 = 'test';
for ($i = 0; $i < 4; $i++) {
  $var = "a$i";
  echo "${$var} ";
}
?>