404 errors after update. Need to flush rewrite rules network-wide

Didn’t know I violated the Forum Rules so here is the code:

http://wordpress.pastebin.com/8L0RBE9B

In your wp-content directory, create a folder called mu-plugins. Create a PHP file with the code from above upload it mu-plugins. This will automatically execute the plugin when someone visits the site (the dashboard – i think). Once its executed, just remove the file and you’ll be good to go.

The plugin works by grabbing all of your blogs, “switching” to that blog and flushing the rewrite rules for the blog, then “switching” back to the current blog you’re logged into. It does this to EVERY blog on your MS network.

The plugin runs automatically (mu-plugins = Must Use Plugins) when one of your sites dashboards are visited. Once this happens, the plugin will loop through all of your blogs and flush the rewrite rules automatically. Therefore no need to visit each sub blog individually. Also, that plugin updates the site url to include https prefix, if you do not need that, delete lines 19 and 20.

I recommend removing the plugin after its ran because if not it will run every time one of you sites has a visitor to the dashboard. So if you had 100 visitors at once that script would loop through all 1100 sites 100 times! Get what i’m saying?

Im not sure if this will be implemented or not! I couldn’t find a plugin to do it so I had to write one that did. I will however polish it a little more and submit it in hopes of it being included in future versions or as a downloadable plugin.

BTW – I updated the plugin by adding a filter that will only execute the function when you’re redirected to the dashboard after logging in.

http://wordpress.pastebin.com/aWVg18cU

No problem. I hope this helps for you as it did for me.

@ipstenu It will grab every blog in your network and flush all of their rewrite rules. However, you have to execute the plugin by logging into your dashboard – as it is hooked to run when you’re redirected to the dashboard. But to better answer your question – no, you DO NOT have to visit each site separately.

@yoige – there’s alreayd a plugin similar to this to do mass actions across the network.
http://plugins.paidtoblog.com/wpmu-power-tools/

Flush rewrite rules is a low use case. 😉

@yogie I’ve modified the code just a bit. You can find the updated code below. I had to modify for another instance of WP MS that I manage. It may or may not work. Just thought I’d throw it out there anyway…

http://pastie.org/1485455

–Update–
Another thing that I noticed is that an affected sites dashboard index has to be visited before it will rewrite flush will take place. IDK why, but this happened to me this time around.

@dscotts3

I’m sorry the new code seems not to work for me either!