abecoffman

That seems to have fixed my problem. With that said, I would recommend taking a similar approach to Super Cache with your plugin, and creating separate files for each protocol. Thanks for the help.

1) I am not using any SSL plugins
2) I haven’t yet discovered consistency in how/when the issue occurs
3) I haven’t tried WP Super Cache

That’s not the problem. Cache Enabler is building the cached page with HTTP urls in the HTML. If I visit the page when I am logged in (I don’t get the cached page) then it works fine, and all of the urls in the HTML are HTTPS.

So this is definitely an issue with either the plugin or wordpress.

Sure, here’s a screen shot:
https://imgur.com/a/GUXgy

Feel free to visit the url directly too (in Safari):
https://honestlyyum.com/15960/black-sesame-banana-bread/

I am running into this same issue with Cache Enabler. It randomly generates some pages with mixed content. It looks like it is urls generated by wp_enqueue_script. I don’t have any rules in my .htaccess relating to SSL but my WordPress Address and Site Address are both set to https.

For those of you who are interested, you can go look at the regex that’s being used to extract the code out of the html comment. The issue I was having was determining when this code executes, which Frederick seems to have cleared up.

So I got it working by switching Page Caching to Disk:Basic and checking the Use Late “Init” checkbox. I guess I probably should have read the line “Adds support for use of WordPress functionality in fragment caching calls” sooner.

I tried this on my localhost and it worked:

— wp-config.php
define('W3TC_DYNAMIC_SECURITY', 'FRAGMENT_CACHING');

— theme files

<!-- mfunc FRAGMENT_CACHING -->
    echo "Not being cached"
<!-- /mfunc FRAGMENT_CACHING -->

When it’s in production, it doesn’t work. The cached pages get built without the dynamic content but the content of the comment doesn’t show up in the html source code.

@secondtail yeah I’ve since come to realize it’s a chrome issue, but thanks for the response. Here’s a related question on stackoverflow:
https://stackoverflow.com/questions/4970734/website-images-that-are-cached-in-chrome-disappear-on-page-refresh

Hopefully Chrome will get this figured out!

I’m also experiencing the same thing on a blog that I manage. You may be able to see the problem:

https://honestlywtf.com

I’m using the Chrome web browser, but I don’t know that it’s causing the issue. It could be some kind of caching problem (I’m using wp-super-cache) but I can’t seem to diagnose it.

I ran into a similar problem and did the following:

Logged into phpMyAdmin and deleted all of my post_thumbnail associations in the database using the following:

DELETE FROM wp_postmeta WHERE meta_key = '_thumbnail_id';

Put the following two lines in my functions.php file:

add_theme_support( 'post-thumbnails' );
add_image_size( 'search-thumb', 80, 80, true );

Then I reran the following commands:
“Regenerate All Thumbnails” and “Generate Post Thumbnails”

Now I can use the following in the loop:

the_post_thumbnail('search-thumb');