WC_Order_Query does not store a record of the SQL it generated, or the WP_Query that it used internally. So it’s not possible to get the information you need from WC_Order_Query directly. You could try using $wpdb->last_query immediately after using the class or function, but the last query more than likely isn’t the one you’re actually … Read more
Due to said complexity, it’s a pretty generic question without a specific answer. But here are some ideas based on what I do to grok through other people’s code. Forward/Back-tracing I do a lot of forward tracing and back tracing through code. If you have an IDE (or something like Notepad++), you can do a … Read more
You should be looking for the wp-config.php file in the root of your WordPress installation. From the documentation in the WP_Debug Section WP_DEBUG is a PHP constant (a permanent global variable) that can be used to trigger the “debug” mode throughout WordPress. It is assumed to be false by default and is usually set to … Read more
Maybe as a must-use plugin? From docs, Always-on, no need to enable via admin and users cannot disable by accident. Can be enabled simply by uploading file to the mu-plugins directory, without having to log-in. Loaded by PHP, in alphabetical order, before normal plugins, meaning API hooks added in an mu-plugin apply to all other … Read more
The reason why the error message refers to a line in a WordPress core file instead of a theme or plugin is because it’s within the function itself that the error occurs, not in the place where add_option() is called. If you want to be able to trace through the code to discover the originating … Read more
I did answer previously in a same question – Please select a file error . Not sure, if it will help.
When you say you removed the WP Super Cache plugin: did you deactivate the plugin, or just delete the plugins/wp-super-cache directory? I suspect the latter, because it looks like your site is still trying to load WP Super Cache files. You probably need to update your wp-config.php file to remove the define( ‘WP_CACHE’, true ); … Read more
Well, as it usually goes, after banging my head on this for hours yesterday and then finally deciding to ask for help, I was able to solve it within a few minutes. Here is what I needed to change: public function init() { // add_action(‘admin_menu’, array($this, ‘add_plugin_admin_menu’)); $this-> add_plugin_admin_menu(); } Clearly, I have much to … Read more
Now this one was really really hard to notice bug. I basically brutforced it by cutting/pasting blocks of code. Long story short – line 462 has wrong code opening tag <? instead of <?php. Which causes some kind of cascading tag mismatch, which seems to go unnoticed by any kind of syntax checker, but wreaks … Read more
you can inspect $wp_query to see the query vars and returned data, including all of those conditionals: <pre><?php print_r($wp_query); ?></pre>