Resource Versioning

“It’s important to make resources (images, scripts, stylesheets, etc.) cacheable.”

Steve Souders

It is much easier to use a CDN without Query String Parameters.
This plugins alters only local resources’ URL-s.
The ver Query String Parameter will be inserted into the filename.

For example jquery.min.js?ver=1.10 becomes jquery.min.110.js.

To reverse this in the web server add this line to your nginx config:

server {
    location ~ ^(.+)\.\d\d+\.(js|css|png|jpg|jpeg|gif|ico)$ {
        #try_files $uri $1.$2 /index.php?$args;
        try_files $uri $1.$2 =404;
    }
}

Or to your Apache configuration or .htaccess file.

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)\.\d\d+\.(js|css|png|jpg|jpeg|gif|ico)$ $1.$2 [NC,L]

Testing the plugin before live usage

You can test the plugin by replacing the two add_filter() calls with this

require_once( dirname( dirname( dirname( dirname( __FILE__ ) ) ) ) . '/wp-load.php' );
wp();
echo o1_revving_src( $argv[1] ) . PHP_EOL;

Then start it from CLI: php revving.php

Links

Development of this plugin goes on on GitHub.

This section describes how to install the plugin and get it working.

1. Upload revving.php to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress

How to remove all Query String Parameters from resources?

Poorly written plugins and themes may add unwanted Query String Parameters.
For example ?rev=4.10.

To drop all these parameters copy this into your wp-config.php:

define( 'O1_REMOVE_ALL_QARGS', true );

0.3.0

• Support cdn-ified URL-s without protocol schema.
• More structured code.

0.2.0

• Strengthen stability.
• Support cdn-ified URL-s.

0.1.3

• FIX: Use proper WordPress function for content URL.

0.1.2

• FIX: Don’t run on admin.

0.1.1

• FIX: External URL detection.

0.1.0

• Initial relase without multisite support.