Drupal 7 commerce add product variation types programmatically

Source code viewer
// Load array with empty variables for the new product type.
$product_type = commerce_product_ui_product_type_new();
 
// Overwrite empty defaults.
$product_type = array(
  'is_new' => TRUE,
  'type' => 'model_' . $id,
  'name' => 'Model ' . $id,
  'revision' => 0,
) + $product_type;
 
// Write the product type to the database.
commerce_product_ui_product_type_save($product_type);
 
// Set the multilingual value for the product type if entity translation is enabled.
if (module_exists('entity_translation')) {
  variable_set('language_product_type_' . $product_type['type'], $product_type['multilingual']);
}
 
Programming Language: PHP