Skip to content
Last updated: Saturday, 13 July 2019
The following code will automatically create a sitemap.xml when a post or page is first published. This is a non-plugin...
In an SQL statement, the IN operator allows you to multiple values in a WHERE clause, for example: SELECT *...
A “Must-Use” plugin is like an ordinary WordPress plugin – it can contain code that shapes what WordPress does – but it...
In WordPress the WPDB class is available for interacting with the database, for example reading or writing data. The PREPARE...
Problem When attempting to save a WordPress post you receive the following error message Warning: Cannot modify header information -...
At their simplest, an anonymous function is an unnamed function. There are many ways they can be used to simplify...
The following steps show how to change PhpStorm’s code cleanup feature to use the WordPress Coding Standards. With PhpStorm open,...
The following PHP code shows how to get all the images embedded in a WordPress post. This may be useful...
When you’re running a website through CloudFlare you may notice that IP addresses being logged are not correct – that...
The following PHP preg_replace function will looking for valid URL’s in a string and turn them into clickable links. For...
Question How do you use a variable multiple times when using $wpdb->prepare ? Answer If your prepared SQL statement needs...
The following guide shows how to install a WordPress IIS test environment on your computer. There are many guides that...
When you need to run custom PHP code on your WordPress site often you’re instructed to add it to the...
The nl2br PHP function can be used to convert \n \r ‘line breaks’ to HTML <br> line breaks. It will...
When sending emails meta-data in the email “header” explains who sent the email. There are two similar, but quite different,...
The following code will disable comments and pingbacks in a WordPress. add_filter( 'pings_open', '__return_false', 10, 2 ); add_filter( 'comments_open', '__return_false',...
By default WordPress will send emails as plain text using the content type “text/plain”. But some plugins, such as Gravity...
The following code shows how to create a shortcode which will load and display an external file. This can be...
If you’ve noticed an @ symbol in some PHP code – you’re likely wondering exactly what it does. The @...