在共享主机上获取数组错误

I am getting error when I upload on shared hosting but in local computer works fine.

My code is below:

<?php
$arr = ["one","two","three"];
echo $arr[0];
?>

current error:

Parse error: syntax error, unexpected '[' in /home/jacky/public_html/test.php on line 2

I think your PHP version is under 5.4 so you can use [].

You have to use this:

$arr = array("one","two","three");
echo $arr[0];