WordPress tutorials, help, and code snippets to help you design and customize your own WordPress site.
Normally, the browser’s HTML5 constraint validation API allows us to set a custom message with setCustomValidity(). However, that only allows text, no HTML. This example shows you how to add an HTML link to the custom validity error message. This example is specifically for the WooCommerce product quantity input field, and it specifically adds a … Read more →
Schedule a MailChimp Campaign With Batch Delivery in WordPressThis is how you can send a MailChimp campaign with “batch delivery” using the MailChimp API version 3. This uses PHP and it works in WordPress. In order to send a MailChimp campaign using batch delivery, it has to be scheduled rather than sent immediately. The MailChimp help articles state that “batch delivery” is only … Read more →
This is how to get a list of all campaigns in a MailChimp account using PHP. This can be used in WordPress. This first function is a generic function to make any type of request to the MailChimp API version 3. This first function is the same that I use in another MailChimp tutorial (Create … Read more →
Quickly Add an Icon To WooCommerce Bank Transfer Payment Method (BACS)Do you want to add an icon to your WooCommerce checkout page for the Direct Bank Transfer payment method? You can add an icon quickly with the steps on this page. If you have an actual image that you want to use as an icon, then follow the first example. If you want to use … Read more →
This is how you can change the meta_key names of post_meta custom fields for WordPress posts. You can change the meta_keys for just one custom field, or for multiple custom fields. To clarify, post_meta are those custom fields of information which have been attached to a post by using either add_post_meta() or update_post_meta(). They are … Read more →
9 Ways To Customize The WordPress AMP Plugin By AutomatticThis is a list of nine ways to customize the WordPress AMP plugin by Automattic. The AMP plugin adds support for the Google Accelerated Mobile Pages project to your WordPress posts. These are individual code snippets (not steps). Each one will provide a different customization for the WordPress AMP plugin. Except where otherwise noted, all … Read more →
Create and Delete Pages, Posts in JavaScript With WordPress REST APIThese are AJAX examples for how to create/insert a new WordPress page or post in JavaScript/jQuery, using the WordPress REST API. This will also show you how to delete a page or post in the same way. Before getting into the JavaScript/jQuery, we need to use wp_localize_script to send two pieces of information to the … Read more →
Create and Send a MailChimp Campaign With MailChimp API v3.0 in WordPressThis is how you can create and send a MailChimp campaign using the MailChimp API version 3.0 in WordPress. (If you want to get a list of all existing MailChimp campaigns, see this, instead.) The first function is a generic function to make any type of request to the MailChimp API v3. The second function … Read more →
There is some bad advice going around regarding updating URLs in the WordPress database when migrating your WordPress site from HTTP to HTTPS. There are tons of examples of MySQL queries that do a “find and replace” of the URLs in your WordPress database, and they’ll change the URLs from HTTP to HTTPS. The bad … Read more →
Using WordPress Customizer To Customize Image Colors For An Image Output With PHP imagepngThis page is for WordPress plugin authors who want to allow users of their plugin to use the WordPress Customizer to customize image colors in an image. Specifically, this is for an image that is created dynamically with PHP and output with the imagepng function. This will allow you to “live preview” that image in … Read more →