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: February 23rd, 2015

NumPluginAuthorScore
1WooCommerce ColorsWooThemes526
2Beaver Builder - WordPress Page BuilderThe Beaver Builder Team155
3Popup MakerDaniel Iser147
4Icegramicegram120
5WP Mail Bank - PHPMailer & SMTP MailerTech Banker112
6Cresta Social Share CounterCrestaProject - Rizzo Andrea110
7AfterShip - WooCommerce TrackingAfterShip110
8WP SubscribeMyThemeShop107
9Better Font AwesomeMIGHTYminnow & Mickey Kay107
10WP Optimize By xTrafficxTraffic106
11Facebook Like Boxsmplug-in105
12Nested PagesKyle Phillips103
13Ultimate Social Media and Share IconsUltimatelySocial97
14WooCommerce JetpackAlgoritmika Ltd96
15Slider WDWebDorado93
16Responsive MenuPeter Featherstone93
17WP Clean Up Optimizer - Optimize WordPressTech Banker92
18Coming soon and Maintenance modemaintenance mode GG, wpdevart, big ben keeper91
19Homepage ControlWooThemes83
20WP ListingsAgent Evolution83

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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