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: January 16th, 2017

NumPluginAuthorScore
1Amazon Associates Link BuilderAmazon Associates Program232
2Contact Formwpdevart167
3TypeSquare Webfonts さくらのレンタルサーバSAKURA Internet Inc.167
4File Managermndpsingh287129
5Conditional Fields for Contact Form 7Jules Colle129
6Google AnalyticsAmr M. Ibrahim125
7Elementor Page TemplaterWPDevHQ122
8Google AnalyticsWebKinder121
9Constant Contact FormsConstant Contact98
10SO Page Builder AnimateDunhakdis98
11Simple CacheTaylor Lovett97
12Contact WidgetsGoDaddy96
13MapPOWr.io93
14One Click Demo ImportProteusThemes92
15Fast Velocity MinifyRaul Peixoto90
16SiteOrigin Widgets by CodeLightsCodeLights89
17Google MapSRMILON87
18FameTheme Demo Importerfamethemes86
19WP Email Userstechspawn186
20Sliderrichteam86

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.