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: April 12th, 2015

NumPluginAuthorScore
1ZenCacheWebSharks, Inc.239
2Share Buttons by GetSocial.ioGetsocial, S.A.169
3WP REST API (WP API)WP REST API Team165
4Post Views CounterdFactory157
5BP Group Documentshttp://wordpress.org/extend/plugins/bp-group-documents136
6WP Google Maps Bank - Google Maps BuilderTech Banker129
7WP Clean Up Optimizer - Optimize WordPressTech Banker129
8Title RemoverBrittany Internet Services121
9TwitterTwitter113
10Our Team ShowcaseSmartCat112
11WC VendorsWC Vendors111
12Custom Login Page CustomizerHardeep Asrani110
13Optin FormsBoris Beo102
14wpDiscuz - Wordpress CommentsgVectors Team (A. Chakhoyan, G. Zakaryan, H. Martirosyan)102
15Facebook Conversion PixelKellen Mace101
16Responsive Pricing TableWP Darko100
17Visitors Traffic Real Time Statisticswp-buy93
18WP Add Custom CSSDaniele De Santis92
19Ultimate MemberUltimate Member89
20WP Author, Date and Meta RemoverJohnnie J. O'Dell Jr.85

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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