I have a tpl.php file. How can i check variable is set and print the value if the variable is set [closed]

Question

I am using in this way. Please correct me if i am wrong

I want the output as "(variable_value)"

<?php if isset(variable_get('variable_name'))?>{ (<?php print t(variable_get('variable_name'));?>)}:

Answer 1

Assuming your variable is a string:

<?php if(isset($variable)): ?>
  <div class="wrapper">
    <?php print $variable; ?>
  </div>
<?php endif; ?>

With variable_get() and brackets:

<?php if isset(variable_get('variable_name')): ?>
  "<?php print t(variable_get('variable_name')); ?>"
<?php endif; ?>

Answer 2

<?php if isset(variable_get('variable_name')): ?>
 <?php print t('('. variable_get('variable_name') . ')'); ?>
<?php endif; ?>