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 26th, 2015

NumPluginAuthorScore
1WP Optimize By xTrafficxTraffic150
2Live Forms - Visual Form BuilderWP Eden140
3Coming soon and Maintenance modemaintenance mode GG, wpdevart, big ben keeper132
4Facebook Like Boxsmplug-in118
5RS FeedBurnerScott Allen117
6Amazon Web ServicesBrad Touesnard114
7Page Builder by WooRockets.comWooRockets Team 108
8SiteGuard WP PluginJP-Secure106
9Responsive Pricing TableWP Darko104
10RSS Post Importerfeedsapi104
11Ultimate Social Media and Share IconsUltimatelySocial102
12Google Maps BuilderWordImpress100
13Max Mega MenuTom Hemsley99
14Recent Posts Widget With ThumbnailsMartin Stehle96
15WPSSO Place and Location Meta - for Facebook "Location" and Pinterest "Place"Jean-Sebastien Morisset94
16Advanced Adshttp://wordpress.org/extend/plugins/advanced-ads93
17Яндекс МетрикаKonstantin Kovshenin93
18WP Social SharingArjun Jain92
19SiteOrigin Widgets BundleSiteOrigin89
20SG CachePressSiteGround85

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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