<?php
// example of PHP dereferencing
$a = [1,2,3];
$b = 'a';
// use $$
var_dump($$b);
// use {}
var_dump(${$b});
// in a function
function test()
{
$a = array();
for ($x = 0; $x < 3; $x++) {
$a[] = $x;
}
return $a;
}
// available after php 5.4
echo test()[2];
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } 2SOURCE CODE