This can happen for a number of reasons but usually when the db gets overloaded or experiences a lot of slow queries. Because the database is either shutdown or thinking too hard, WordPress was not able to make a new connection. To fix the slow queries get a plugin like Query Monitor to identify slow … Read more
This plugin finds the image files which have not been used within a post or page and displays them for deletion from both your uploads directory and database. Images you have uploaded and used in other area’s of your site will also be displayed. Only problem is it hasn’t been updated in a while. WordPress … Read more
You don’t have to “include” plugins. Plugins operate, or should operate, by means of the extensive “hook” system built into WordPress core. Once activated, a plugin should not require much else (with a few exceptions for very complicated plugins). What you need to do is make sure that you are using the appropriate Core functions … Read more
With a combination of jQuery / JavaScript and WP AJAX; you could look for an onchange event on the select box, send an ajax request to your admin-ajax.php with the year and then do a custom WP Query to return the html for the secondary drop down and append it to your dom. https://codex.wordpress.org/Plugin_API/Action_Reference/wp_ajax_%28action%29 http://api.jquery.com/jquery.ajax … Read more
Shortcode Attribute contains clone of all shortcode attributes
The function submit_button() does generate: <input type=”submit” name=”submit” id=”submit” class=”button button-primary” value=”Save Changes” /> As seen on the codex documentation page. Which gives you the possibility to check for a $_POST or, depending on the form, $_GET or generic $_REQUEST variable – to be exact for $_POST[ ‘submit’ ] or $_GET[ ‘submit’ ] or $_REQUEST[ … Read more
When you visit a frontend page, WordPress will query the database and if your page does not exist in the database, that query is not needed and is just a waste of resources. Luckily, WordPress offers a way to handle frontend requests in a custom way. That is done thanks to the ‘do_parse_request’ filter. Returning … Read more
You can use uniqueid() from php. It’ll generate unique id for your css selector. Or if you use any WordPress core pages like : archive, tags, category pages, please refer following article: 9 Ways to Set Dynamic Body Ids via PHP and WordPress
One WP Database outside localhost and two connections
Create child theme of the main theme you’re using. That way you can override just the parts you want. Reference – https://codex.wordpress.org/Child_Themes Hope it helps!