why i can't see this array

Question

<?php
$ser=455;
$oy=988;
$fer=array[$ser,$oy];
echo '$fer';
?>

Answer 1

you cant see "array" but $fer is not correct declarate , use array($ser,$oy) and for print use foreach

Answer 2

Try echo$fer;

Answer 3

you must call array include index and write without quote, try : echo $fer[1]

Answer 4

try echo $fer[0] + " " + $fer[1];