API Key Environment Variable in PHP: Where It Goes
Learn where a PHP API key environment variable should live, how to read it safely, and every place it must never end up: git,…
Learn where a PHP API key environment variable should live, how to read it safely, and every place it must never end up: git,…
Exponential backoff jitter API retries stop retry storms when LLM calls fail together. See jitter formulas, PHP code and which errors are safe to…
Your LLM call works in a test script. Production needs a server-side proxy, timeouts, retries that tell a rate limit from a spend cap,…
Bulk update posts with WP-CLI: select IDs with wp post list, apply one change, and verify. Back up with wp db export first, and…
Register a custom WP-CLI command with WP_CLI::add_command, document its arguments in the docblock, and make it safe to run on production: dry run first.
A child theme's functions.php loads before the parent's, and copying the parent's file causes a fatal error. Build a child theme that survives updates.
Where add_theme_support went in block themes: the theme.json v3 settings that replace it, the layers that override your file, and what stays in PHP.
A missing dependency makes WordPress drop your script tag with no warning. How $deps, handles, defer and versions really work, and how to debug…
Why a custom post type vanishes on a theme switch, which register_post_type arguments actually decide behavior, and the rewrite flush that has to happen…
You need one more field on /wp/v2/posts. register_rest_field does it in a dozen lines, keeps pagination and permissions, and does not create a second…
WordPress nonces protect against CSRF, not authentication or authorization. See how capability checks, sanitization, Ajax, and REST security fit together.
Validate input, sanitize before storage, and escape at output. Understand where each step belongs in WordPress and PHP and why the order matters for…
One typo in functions.php takes down the front end and the admin together. How to get back in, why it happens, and the change…
Build your first real WordPress plugin with proper headers, structure, naming, activation hooks, and site-specific code that survives theme changes.
There are hundreds of hooks and you need one. Choose by what must already exist when your code runs, not by what the last…