I added checked=checked, but the last option was selected. I want the first option. How can I do that?
<?php
         if ($options) { ?>
          <?php $i=1; foreach ($options as $option) { ?>
            <?php if ($option['type'] == 'select') { ?>
                <?php if($i==2) {    $s=0;?>
                <div id="option-<?php echo $option['product_option_id']; ?>" class="mug_option" style="float:left; width:45%;">
                  <?php echo $text_imprint_side1;?>
                  <?php foreach ($option['option_value'] as $option_value) { ?>
                  <div><input type="radio" checked="checked" name="mug_option[<?php echo $option['product_option_id']; ?>]" value="<?php echo $option_value['product_option_value_id']; ?>" id="mug-option-value-<?php echo $option_value['product_option_value_id']; ?>" class="color_opt" />
  <label for="mug-option-value-<?php echo $option_value['product_option_value_id']; ?>"><?php echo $option_value['name']; ?>
   <?php if ($option_value['price']) { ?>
    <input type="hidden" name="opt_price" id="opt_price<?php echo $option_value['product_option_value_id']; ?>" value="<?php echo $option_value['price_without_symbol']; ?>" />
   <?php } else { ?>
    <input type="hidden" name="opt_price" id="opt_price<?php echo $option_value['product_option_value_id']; ?>" value="0" />
   <?php } ?>
  </label>
  </div>
                 <?php } ?>
                </div>
                <?php } ?>
 
     
    