<?php

global $product;

if (!$product->is_in_stock()) {
  $showText = '<span class="out">Out of stock</span>';
  echo $showText;
}

if ($product->is_on_sale() && $product->get_type() !== 'grouped'){

  if ( $product->get_type() == 'variable' ) {
    $vars = $product->get_available_variations();

    $var_cero = $vars[0]['variation_id'];
    $variable_product = wc_get_product($var_cero);
    $regular_price = $variable_product->get_regular_price();
    $sale_price = $variable_product->get_sale_price();
    if($sale_price){
      $percent_max = round((($regular_price - $sale_price) / $regular_price) * 100);
    } else {
      $percent_max = 0;
    }

    $cont_percent = 0;
    foreach ($vars as $varID) {
      $variable_product = wc_get_product($varID['variation_id']);
      $regular_price = $variable_product->get_regular_price();
      $sale_price = $variable_product->get_sale_price();
      if($sale_price){
        $percent = round((($regular_price - $sale_price) / $regular_price) * 100);
      } else {
        $percent = 0;
      }

      if($percent_max != $percent){
        if($percent_max > $percent){
          $percent_max = $percent_max;
        } else {
          $percent_max = $percent;
        }			 
      } else {
        $cont_percent++;
      }

      #echo $regular_price." - ".$sale_price."%".$percent_max."<br>";

    }

    if($cont_percent == count($vars)){
      $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent_max. '%</span>';
    } else {
      $showText = '<span class="onsale">'. __('Up to -', 'woocommerce' ). $percent_max. '%</span>';
    }

  } else {
    $regular_price = $product->get_regular_price();
    $sale_price = $product->get_sale_price();
    $percent = round((($regular_price - $sale_price) / $regular_price) * 100);

    $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent . '%</span>';
  }

  echo $showText;
}

?>

<?php

global $product;

if (!$product->is_in_stock()) {
  $showText = '<span class="out">Out of stock</span>';
  echo $showText;
}

if ($product->is_on_sale() && $product->get_type() !== 'grouped'){

  if ( $product->get_type() == 'variable' ) {
    $vars = $product->get_available_variations();

    $var_cero = $vars[0]['variation_id'];
    $variable_product = wc_get_product($var_cero);
    $regular_price = $variable_product->get_regular_price();
    $sale_price = $variable_product->get_sale_price();
    if($sale_price){
      $percent_max = round((($regular_price - $sale_price) / $regular_price) * 100);
    } else {
      $percent_max = 0;
    }

    $cont_percent = 0;
    foreach ($vars as $varID) {
      $variable_product = wc_get_product($varID['variation_id']);
      $regular_price = $variable_product->get_regular_price();
      $sale_price = $variable_product->get_sale_price();
      if($sale_price){
        $percent = round((($regular_price - $sale_price) / $regular_price) * 100);
      } else {
        $percent = 0;
      }

      if($percent_max != $percent){
        if($percent_max > $percent){
          $percent_max = $percent_max;
        } else {
          $percent_max = $percent;
        }			 
      } else {
        $cont_percent++;
      }

      #echo $regular_price." - ".$sale_price."%".$percent_max."<br>";

    }

    if($cont_percent == count($vars)){
      $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent_max. '%</span>';
    } else {
      $showText = '<span class="onsale">'. __('Up to -', 'woocommerce' ). $percent_max. '%</span>';
    }

  } else {
    $regular_price = $product->get_regular_price();
    $sale_price = $product->get_sale_price();
    $percent = round((($regular_price - $sale_price) / $regular_price) * 100);

    $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent . '%</span>';
  }

  echo $showText;
}

?>

<?php

global $product;

if (!$product->is_in_stock()) {
  $showText = '<span class="out">Out of stock</span>';
  echo $showText;
}

if ($product->is_on_sale() && $product->get_type() !== 'grouped'){

  if ( $product->get_type() == 'variable' ) {
    $vars = $product->get_available_variations();

    $var_cero = $vars[0]['variation_id'];
    $variable_product = wc_get_product($var_cero);
    $regular_price = $variable_product->get_regular_price();
    $sale_price = $variable_product->get_sale_price();
    if($sale_price){
      $percent_max = round((($regular_price - $sale_price) / $regular_price) * 100);
    } else {
      $percent_max = 0;
    }

    $cont_percent = 0;
    foreach ($vars as $varID) {
      $variable_product = wc_get_product($varID['variation_id']);
      $regular_price = $variable_product->get_regular_price();
      $sale_price = $variable_product->get_sale_price();
      if($sale_price){
        $percent = round((($regular_price - $sale_price) / $regular_price) * 100);
      } else {
        $percent = 0;
      }

      if($percent_max != $percent){
        if($percent_max > $percent){
          $percent_max = $percent_max;
        } else {
          $percent_max = $percent;
        }			 
      } else {
        $cont_percent++;
      }

      #echo $regular_price." - ".$sale_price."%".$percent_max."<br>";

    }

    if($cont_percent == count($vars)){
      $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent_max. '%</span>';
    } else {
      $showText = '<span class="onsale">'. __('Up to -', 'woocommerce' ). $percent_max. '%</span>';
    }

  } else {
    $regular_price = $product->get_regular_price();
    $sale_price = $product->get_sale_price();
    $percent = round((($regular_price - $sale_price) / $regular_price) * 100);

    $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent . '%</span>';
  }

  echo $showText;
}

?>

<?php

global $product;

if (!$product->is_in_stock()) {
  $showText = '<span class="out">Out of stock</span>';
  echo $showText;
}

if ($product->is_on_sale() && $product->get_type() !== 'grouped'){

  if ( $product->get_type() == 'variable' ) {
    $vars = $product->get_available_variations();

    $var_cero = $vars[0]['variation_id'];
    $variable_product = wc_get_product($var_cero);
    $regular_price = $variable_product->get_regular_price();
    $sale_price = $variable_product->get_sale_price();
    if($sale_price){
      $percent_max = round((($regular_price - $sale_price) / $regular_price) * 100);
    } else {
      $percent_max = 0;
    }

    $cont_percent = 0;
    foreach ($vars as $varID) {
      $variable_product = wc_get_product($varID['variation_id']);
      $regular_price = $variable_product->get_regular_price();
      $sale_price = $variable_product->get_sale_price();
      if($sale_price){
        $percent = round((($regular_price - $sale_price) / $regular_price) * 100);
      } else {
        $percent = 0;
      }

      if($percent_max != $percent){
        if($percent_max > $percent){
          $percent_max = $percent_max;
        } else {
          $percent_max = $percent;
        }			 
      } else {
        $cont_percent++;
      }

      #echo $regular_price." - ".$sale_price."%".$percent_max."<br>";

    }

    if($cont_percent == count($vars)){
      $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent_max. '%</span>';
    } else {
      $showText = '<span class="onsale">'. __('Up to -', 'woocommerce' ). $percent_max. '%</span>';
    }

  } else {
    $regular_price = $product->get_regular_price();
    $sale_price = $product->get_sale_price();
    $percent = round((($regular_price - $sale_price) / $regular_price) * 100);

    $showText = '<span class="onsale">'. __('-', 'woocommerce' ). $percent . '%</span>';
  }

  echo $showText;
}

?>