Change Add to Cart Quantity into a Drop-down

The default WooCommerce Add to Cart “Quantity Input” is a simple input field where you can enter the number of items or click on the “+” and “-” to increase/reduce the quantity.

To let the users choose the quantity from a drop-down instead of having to manually input the number. This can be done using woocommerce_quantity_input function. Simply add the following Snippet to your Functions.php.

function woocommerce_quantity_input( $args = array(), $product = null, $echo = true ) {
  
   if ( is_null( $product ) ) {
      $product = $GLOBALS['product'];
   }
 
   $defaults = array(
      'input_id' => uniqid( 'quantity_' ),
      'input_name' => 'quantity',
      'input_value' => '1',
      'classes' => apply_filters( 'woocommerce_quantity_input_classes', array( 'input-text', 'qty', 'text' ), $product ),
      'max_value' => apply_filters( 'woocommerce_quantity_input_max', -1, $product ),
      'min_value' => apply_filters( 'woocommerce_quantity_input_min', 0, $product ),
      'step' => apply_filters( 'woocommerce_quantity_input_step', 1, $product ),
      'pattern' => apply_filters( 'woocommerce_quantity_input_pattern', has_filter( 'woocommerce_stock_amount', 'intval' ) ? '[0-9]*' : '' ),
      'inputmode' => apply_filters( 'woocommerce_quantity_input_inputmode', has_filter( 'woocommerce_stock_amount', 'intval' ) ? 'numeric' : '' ),
      'product_name' => $product ? $product->get_title() : '',
   );
 
   $args = apply_filters( 'woocommerce_quantity_input_args', wp_parse_args( $args, $defaults ), $product );
  
   
   $args['min_value'] = max( $args['min_value'], 0 );
   $args['max_value'] = 0 < $args['max_value'] ? $args['max_value'] : 20;

   if ( '' !== $args['max_value'] && $args['max_value'] < $args['min_value'] ) {
      $args['max_value'] = $args['min_value'];
   }
  
   $options = '';
    
   for ( $count = $args['min_value']; $count <= $args['max_value']; $count = $count + $args['step'] ) {

      if ( '' !== $args['input_value'] && $args['input_value'] >= 1 && $count == $args['input_value'] ) {
        $selected = 'selected';      
      } else $selected = '';
 
      $options .= '<option value="' . $count . '"' . $selected . '>' . $count . '</option>';
 
   }
     
   $string = '<div class="quantity"><span>Qty</span><select name="' . $args['input_name'] . '">' . $options . '</select></div>';
 
   if ( $echo ) {
      echo $string;
   } else {
      return $string;
   }
  
}

Before:

See also  WordPress Post Navigation Design
Default Quantity Input

After:

Dropdown Quantity Input

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