[php] Parse error: syntax error, unexpected [

I have this simple function

  function render($template, $values = []) {     // if template exists, render it     if (file_exists("../templates/$template"))     {         // extract variables into local scope         extract($values);          // render header         require("../templates/header.php");          // render template         require("../templates/$template");          // render footer         require("../templates/footer.php");     }      // else err     else     {         trigger_error("Invalid template: $template", E_USER_ERROR);     } 

This works fine when I am working on my localhost, but when I uploaded the files on my webhost and this function is used in a php file as follows->

<?php     // configuration    require("../includes/config.php");      render("mainpage_template.php", ["title" => "Welcome "]);        ?> 

I get this parse error written in the title.Why is it working only on my localmachine?