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 20th, 2017

NumPluginAuthorScore
1Disable REST APIDave McHale215
2Slider by Nivo - Responsive Image SliderThemeIsle179
3GalleryHuge-IT152
4Analyticstms_gac146
5Limit Login Attempts Reloadedwpchefgadget140
6GoDaddy Email MarketingGoDaddy129
7Contact Formwpdevart126
8Save Contact Form 7Nimblechapps114
9MainWP Child ReportsMainWP107
10Contact FormNickDuncan102
11Hide My WordpressWPPlugins99
12Re-add text underline and justifyBrice Capobianco99
13Font OrganizerHive97
14PHP Compatibility CheckerWP Engine89
15Read MoreEdmon85
16Security & Firewall by CleanTalkCleanTalk.org84
17GiphyPressTeam GIPHY83
18Conditional Fields for Contact Form 7Jules Colle83
19WP Force SSLKostas Vrouvas82
20Constant Contact FormsConstant Contact81

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.