Tag: Plugin Development

Test against popular themes, major plugins, and multiple WP/PHP versions.

Prevent cross-site scripting by escaping output and restricting allowed HTML.

Block unauthorized users from admin pages, AJAX, REST, and direct PHP file access.

Enable WP_DEBUG tools and inspect notices/errors while developing plugins.

Ship secure plugins with defense-in-depth: caps, nonces, sanitize, escape, prepare.

Stop cross-site request forgery using nonces on forms, links, AJAX, and REST where appropriate.

Prevent SQL injection with $wpdb->prepare and trusted allowlists for SQL identifiers.

Make plugin strings translatable and load text domains correctly.

Use __, _e, esc_html__, _n, and related helpers for i18n-ready plugins.

Make plugins work smoothly with WPML, Polylang, and multilingual content setups.