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 13th, 2017

NumPluginAuthorScore
1Hummingbird Page Speed OptimizationWPMU DEV202
2Mageewp Page LayoutMageewp153
3Contact Form 7 Database Addon – CFDB7Arshid144
4Instagram GalleryKaran Singh129
5GutenbergGutenberg Team127
6Redirect 404 To HomepageLittleBizzy113
7CleverReach NewsletterHannes Etzelstorfer99
8MailPoet 3 (new)MailPoet99
9Reduce HTTP Requests, Disable Emojis & Disable Embeds, Speedup WooCommercepigeonhut, Jody Nesbitt, optimisation.io89
10Category to Pages WUDDanny WUD87
11Shapely CompanionColorlib86
12Premium SEO Pack – WordPress SEO PluginWP SEO - Calin Vingan86
13Noor – Visual Composer Addonsthemebon84
14SchemaHesham83
15Podamibe Simple Footer Widget AreaPodamibe Nepal81
16Cherry Team MembersJetImpex81
17Acme Demo SetupAcme Themes79
18Bold Page BuilderBoldThemes78
19MailChimp for WooCommerceMailChimp77
20reSmush.it Image OptimizerMaecia76

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.