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: March 26th, 2017

NumPluginAuthorScore
1ThemeGrill Demo ImporterThemeGrill215
2Page BuilderPluginOps180
3ThemeIsle CompanionThemeisle153
4Contact Form SubmissionsJason Green146
5Cherry SidebarsCherry Team133
6Elementor Addon ElementsWebtechstreet.com114
7Remove Yoast SEO commentsMitch114
8Nelio Content - Auto Publish on Social MediaNelio Software110
9LoginWPBrigade108
10WP Time CapsuleRevmakx104
11Twitter FeedArrow Plugins104
12Shapely CompanionColorlib102
13WP Email SMTPFormGet94
14Widget OptionsPhpbits Creative Studio90
15Page Templater For ElementorWPDevHQ88
16Google AnalyticsWebDorado83
17ACF Content Analysis for Yoast SEOViktorFroberg, marol87, pekz0r, angrycreative80
18Contact Formwpdevart80
19Google MapSRMILON79
20affilinet Performance Adsaffilinet78

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.