Wordpress Upload media file from front-end

$filename = rand(1000, 10000) . str_replace(" ","-",$_FILES["video_thumbnail"]["name"]);

 

 

  require_once(ABSPATH . '/wp-load.php');

  require_once(ABSPATH . "wp-admin" . '/includes/file.php');

  require_once(ABSPATH . "wp-admin" . '/includes/image.php');

  

  $upload_overrides = array( 'test_form' => FALSE );

  $uploads = wp_upload_dir();

  

  $file_array = array(

   'name' => $filename,

   'type' => $_FILES['video_thumbnail']['type'],

   'tmp_name' => $_FILES['video_thumbnail']['tmp_name'],

   'error' => $_FILES['video_thumbnail']['error'],

   'size' => $_FILES['video_thumbnail']['size'],

  );

     

  $uploaded_file = wp_handle_upload( $file_array, $upload_overrides );

  

  $wp_filetype = wp_check_filetype( basename( $uploaded_file['file'] ), null ); 

  

  $attachment = array(

   'post_mime_type' => $wp_filetype['type'],

   'post_title' => preg_replace('/\.[^.]+$/', '', $filename),

   'post_content' => '',

   'post_status' => 'inherit'

  );

  $uploadfile = $uploads['path'].'/' . basename( $filename );

    

  $attachment_id = wp_insert_attachment( $attachment, $uploadfile );

    

  $attach_data = wp_generate_attachment_metadata( $attachment_id, $uploadfile );

  

  $attachimage_url = $uploads['url'].'/'.basename( $filename ) ;

  wp_update_attachment_metadata( $attachment_id, $attach_data );

  

  echo json_encode(array($attachment_id, $attachimage_url));