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: October 27th, 2014

NumPluginAuthorScore
1WPSSO App Meta - for Apple's mobile Safari and Twitter's App CardJean-Sebastien Morisset241
2Instagram FeedSmash Balloon142
3WPL Real EstateRealtyna Softwares137
4WooCommerce JetpackAlgoritmika Ltd118
5Image GalleryHuge-IT117
6Favicon by RealFaviconGeneratorPhilippe Bernard109
7LightboxHuge-IT109
8Master Slider - Responsive Touch Slideraverta102
9Popups - Wordpress PopupsDamian Logghe97
10Query posts by category... and display posts on page in grid layout without coding - Content ViewsPT Guy95
11Crazy Bonewokamoto94
12WP Product ReviewThemeisle89
13Social Share ButtonprojectW89
14iFeature SliderCyberChimps inc.87
15WP ReviewMyThemesShop87
16All-in-One WP MigrationServMask87
17Grid Gallery Ready!gallery plugin ready87
18SidekickSidekick.pro84
19Yasr - Yet Another Stars RatingDario Curvino83
20WP Tab WidgetMyThemeShop81

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

    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

    interesting code, thanks for always staying on top of things :)

  3. kevin
    Mar 3rd, 2011

    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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