WordPress shortcode snippet to display external files

I needed a quick way to automatically include external page content in my WordPress Rising Stars post.

There are two tables with latest plugin standings that are automatically generated and I wanted the post to be updated automatically when they update too.

Easiest way to accomplish this is through WordPress shortcode API with a simple code that you can add into the theme functions.php file:

Here is the code:

function show_file_func( $atts ) {
  extract( shortcode_atts( array(
    'file' => ''
  ), $atts ) );

  if ($file!='')
    return @file_get_contents($file);
}

add_shortcode( 'show_file', 'show_file_func' );

This allows you to write something like this anywhere in your post:

Last updated: August 30th, 2015

NumPluginAuthorScore
1Robo Gallery - Photo Gallery and Images GalleryRoboSoft (c)181
2Better Google AnalyticsDigital Point141
3CalendarWebDorado137
4Unite Gallery LiteValiano132
5OptinMonster - Best WordPress Popup and Lead Generation PluginThomas Griffin128
6PixTypesPixelGrade116
7404 to 301Joel James107
8EU Cookie LawAlex Moss, Marco Milesi, Peadig, Shane Jones104
9YITH WooCommerce Quick ViewYithemes104
10PixCodesPixelGrade102
11inSite for WP: Personalization Made EasyDuda101
12InstagramWeblizar99
13Simple Facebook Page Widget & ShortcodeDylan Ryan98
14AccessPress Twitter FeedAccessPress Themes94
15Maintenance ModeMuneeb94
16PlanSo FormsPlanSo.de93
17Custom Login Page Styler-Theme Your LoginZia Imtiaz92
18Bootstrap for Contact Form 7Felix Arntz91
19YITH WooCommerce Catalog ModeYithemes90
20Contact Form PluginGhozyLab, Inc.89

The snippet above will automatically include the contents of given page into your post. Handy, isn't it?


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3 Comments

  1. Jan 2nd, 2013 10:02 PM

    This is a very dangerous shortcode that could allow authors to read any file on the server filesystem. You can make it safer by using WP’s HTTP api instead of file_get_contents(), but it’ll still be dangerous.
    [ show_file file="/etc/passwd" ] !

  2. Mar 18th, 2011 11:31 AM

    interesting code, thanks for always staying on top of things :)

  3. kevin
    Mar 3rd, 2011 7:34 AM

    is there anyway to use this code to embed the remote file into a wordpress widget or the sidebar, instead of a post? Or maybe a wordpress plugin that keeps the last post on the homepage sticky, instead of the first like other plugins ive seen. thanks.

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