WP-Mix (Page 8 of 36) | A fresh mix of code snippets and tutorials

503 Service Unavailable Headers via PHP

Sending a few HTTP headers is a simple way to let visitors and search engines know that your site currently is unavailable. This is useful when you are doing maintenance and don’t need access to the front-end of your site. Simply add the rules when your site is down, and then remove them once everything […]

WordPress clean up do_pings

When your WordPress site is configured to enable pings, the database can fill up with many do_pings WP Cron entries. This post provides a couple of quick ways to clean them up, by either disabling the functionality or deleting the do_pings entries from the database.

PHP: Get $_SERVER Variables

I use a variation of this function to get super global $_SERVER variables in my free shapeSpace WordPress theme. The function returns all relevant variables contained in the $_SERVER array. Note this is a general PHP technique, so WordPress is not required for this one.

Display Images with User Submitted Posts

Here is a quick recipe for displaying linked images for images submitted with the User Submitted Posts plugin.

WordPress repair and optimize InnoDB

This tutorial explains how to use WordPress’ built-in tools for optimizing database tables that are of the InnoDB type. Also works for good ’ol MyISAM database tables.

Get Current Post Type in the WordPress Admin Area

In WordPress, you can create posts, pages, or any custom post type. Within your theme template, you can get the current post type using the core WP function, get_post_type(). But that doesn’t work in the Admin Area. For example, my Disable Gutenberg plugin provides conditional functionality to the “Add New” and “Edit” screens based on […]

Auto-Focus Form Fields with jQuery

When you load a page that contains a form, it may be useful to automatically place the user’s cursor in the first form field. This post explains how to do autofocus with jQuery.

Simple PHP login form

Here’s a quick PHP snippet for creating a simple login form for your site.

Force file download with .htaccess

Here is a quick .htaccess snippet that will force files to download instead of displaying in the browser. This method works for any site running on an Apache server.

WP Admin link to All Options

The WordPress database houses more settings than those available in the Admin Area. Here’s a quick code snippet to display an “All Options” screen to view otherwise hidden data.

WordPress enqueue user-agent stylesheets

WordPress makes it clean and easy to enqueue custom stylesheets via the functions.php file. Here’s how to do it for user-agent stylesheets.

Allowed HTML tags for wp_kses()

Developing WordPress plugins, I frequently need to specify an array of allowed HTML tags and attributes for wp_kses(). The collection of allowed tags has grown over time, and so I’m posting it here at WP-Mix for future reference. Just makes my life easier, hopefully it helps you too.

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