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Example
Complete example using capability checks, data validation, secure input, secure output and nonces...
Escaping Data
Escaping output is the process of securing output data by stripping out unwanted data, like malfo...
Validating Data
Untrusted data comes from many sources (users, third party sites, even your own database!) and al...
Common Vulnerabilities
Security is an ever-changing landscape, and vulnerabilities evolve over time. The following is a ...
POSTing data to an external service
POST is used to send data to the server for the server to act upon in some way. For example, a co...
Performance
When you make an HTTP request, your application has to wait for the external server to respond to...
GETting data from an external service
GETting data is made incredibly simple in WordPress through the wp_remote_get() function. This f...
Authentication
Many APIs will require you to make authenticated requests to access some endpoints. A common auth...
Advanced
Here are some advanced usage of the HTTP API. Other methods GET and POST are the most commonly us...
Localization
What is localization? Localization describes the process of translating a software and adapting i...
Internationalization Guidelines
In this article, you will learn when and how to use all available i18n functions and the best pra...
Internationalization Functions
Check the Internationalization Guidelines and learn what each i18n function is for, how to use th...
Filter Reference
This article contains an extensive (but not 100% comprehensive) list of the filter hooks availabl...
Action Reference
This is a (hopefully) comprehensive list of action hooks available in WordPress version 2.1 and a...
Theme security issues
Please do not report security issues with WordPress Core to the themes team. To report an issue w...
Templates
Templates are one of the most important aspects of theme development. They are files that you put...
Template Parts
Templates represent the top-level document structure for the front end of a website. But template...
Template Hierarchy
As covered in the Templates documentation, templates are reusable files that are used to generate...
Introduction to Templates
Like nearly all content management systems, WordPress uses a templating system to handle the outp...
Writing Documentation
Documentation is important for themes as it provides a way for users to understand what a theme d...