custom post type in wordpress

code link- https://www.dropbox.com/s/76xabzzqqzoeh2c/sample.php?dl=0
*
 * create a folder named sample under the plugin directory in wordpress wp-content/plugins/ and put the sample.php to it 100% working
 */

<?php
/*
 * Plugin Name:Sample
 * Description:Test purpose
 * Plugin URI:http://hhiitthhiinn.blogspot.com
 * Author:Hithin chandran
 * Version:1.0
 * AUTHOR URI:http://hhiitthhiinn.blogspot.com
 */


function my_custom_post_product() {
  $labels = array(
    'name'               => _x( 'Samples', 'post type general name' ),
    'singular_name'      => _x( 'Sample', 'post type singular name' ),
    'add_new'            => _x( 'Add New', 'Sample' ),
    'add_new_item'       => __( 'Add New Sample ' ),
    'edit_item'          => __( 'Edit Sample' ),
    'new_item'           => __( 'New Sample' ),
    'all_items'          => __( 'All Samples' ),
    'view_item'          => __( 'View samples' ),
    'search_items'       => __( 'Search Samples' ),
    'not_found'          => __( 'No samples found' ),
    'not_found_in_trash' => __( 'No samples found in the Trash' ),
    'parent_item_colon'  => '',
    'menu_name'          => 'Samples'
  );//label settings
 
  $args = array(
    'labels'        => $labels,
    'description'   => 'Holds our Samples and sample specific data',
    'public'        => true,
    'menu_position' => 5,
    'supports'      => array( 'title', 'editor', 'thumbnail', 'excerpt', 'comments','custom-fields','trackbacks',"page-attributes","post-formats" ),
    'has_archive'   => true,
      "slug"=>"sample",
      "show_in_admin_bar"=>true,
      "menu_icon"=>"dashicons-smiley",
      "can_export"=>TRUE
  );//custom post type attributes
  register_post_type( 'product', $args );//used to register a post type 
}
add_action( 'init', 'my_custom_post_product' );//adding the post type
//visit https://codex.wordpress.org/Function_Reference/register_post_type for more information