A WordPress PHP developer for version upgrades, custom plugins, fatal errors, and slow queries. The layer where a page builder stops being any help at all.
A WordPress PHP developer works below the theme and builder layer: version upgrades, custom plugins, hooks and filters, fatal error debugging, and database query performance. Rates start at 15 USD per hour, a PHP version upgrade with fixes usually takes days rather than weeks, and most debugging jobs are resolved the same week.
Every WordPress site is a PHP application, which is the whole reason a WordPress PHP developer exists. The builder, the theme, and the admin are all interfaces over code that runs on your server every time somebody loads an uncached page. Most of the time you never need to think about it, which is the point.
You need a WordPress PHP developer at the moments when that stops being true. A host announces a version change and the site breaks. A plugin does eighty percent of what you need. Something throws a white screen and the interface that was supposed to hide the complexity is now hiding the error too.
This is also the layer where a WordPress PHP developer decides whether your site merely works or works safely. Escaping, sanitising, capability checks, and nonces are unglamorous and they are the entire distance between a site that gets compromised and one that does not. The WordPress security APIs document all of it, and almost every vulnerability I have cleaned up came from ignoring one of them.
I have worked as a WordPress PHP developer for over five years across 250+ projects. Some of it is greenfield plugin work. Much more is archaeology: reading code somebody else wrote, working out what it was meant to do, and making it survive the next update.
The reason most people find themselves needing a WordPress PHP developer at short notice.
Hosts move PHP versions forward because old ones stop receiving security patches, and that is when most people go looking for a WordPress PHP developer. That is the right decision and it is why sites break in ways their owners did not expect. Code written against an older version may call functions that no longer exist or rely on behaviour that changed, and PHP will refuse to run it rather than guess.
The versions currently supported change every year, so rather than list them here where they would go stale, check the official PHP supported versions page. The rule of thumb is simple enough: if your site is on any 7.x release, it is running on a version the PHP project no longer patches, and that is a security position rather than a preference.
The sequence a WordPress PHP developer should follow takes a day or two and removes almost all of the risk. Run a compatibility scan to find code calling removed functions. Take a staging copy and switch it to the target version. Fix the fatals and clear the deprecation warnings there. Click through the site including checkout and forms. Then switch production at a quiet hour with the previous version one click away.
What a WordPress PHP developer gains you here goes beyond just not being broken. Newer PHP executes faster, which WordPress feels directly because it does a lot of work per request, and your error log stops filling with noise that hides real problems. Related work under speed optimisation and emergency support when it has already gone wrong.
Six kinds of work that make up most WordPress PHP developer engagements.
Compatibility scanned, staging upgraded first, deprecations and fatals fixed there, then production moved with a rollback ready. The most common PHP job on inherited sites.
Functionality built as a plugin so it survives a redesign, doing one thing well rather than importing forty features to get one.
Behaviour changed through the actions and filters WordPress provides, rather than editing core or plugin files that the next update overwrites.
White screens, 500 errors, and intermittent failures traced through logs and stack traces rather than by deactivating plugins hopefully.
Slow queries profiled and fixed, indexes added where they belong, and loops that hit the database on every iteration rewritten.
Third-party services connected properly with error handling, retries, and logging, so a failing API does not silently break your site.
Full detail on the service pages: custom plugin development, bug fixing, and WordPress development.
Two or more of these, and a WordPress PHP developer costs less than the workarounds.
Send me the URL and any error you can see. I will read the logs, tell you what is actually failing, and whether it is a ten minute fix or something larger. No obligation either way.
Get a Free DiagnosisFour principles behind every WordPress PHP developer engagement I take on.
WordPress provides thousands of actions and filters precisely so a WordPress PHP developer can change behaviour without touching code that updates will overwrite. A WordPress PHP developer editing a plugin file directly is handing you a problem with a timer on it, and the timer runs out on whichever Tuesday that plugin updates.
The same applies to core, to WooCommerce, and to themes you did not write. If the behaviour cannot be reached through a hook, the answer is usually a properly overridden template or a small plugin, not a modified vendor file that nobody will remember exists.
The test any WordPress PHP developer should apply is whether the code should survive a redesign. A custom post type, a payment integration, a business rule about who sees what: all of those should still work when you change theme, so they belong in a plugin. Template markup and styling belong in the theme.
This gets ignored constantly because the theme functions file is convenient, and it is the reason so many redesigns quietly break integrations nobody remembered were there. A purpose-built plugin costs almost nothing extra to set up and prevents that entirely.
A WordPress PHP developer sanitises anything coming in, escapes everything going out, check a nonce before any state-changing request, and confirm the user actually has the capability before doing the thing. Prepared statements for database work. None of this is difficult and all of it gets skipped.
The reason it matters is that WordPress runs a large share of the web, which makes it worth attacking at scale. Sites are not usually compromised by someone targeting them personally; they are compromised by a bot testing a known weakness across a million domains. Related work under security hardening.
Slow sites get blamed on hosting more often than they should, and a WordPress PHP developer should prove it either way. Profiling shows what is actually taking the time, which is regularly a query inside a loop or a meta lookup across a large table rather than anything the host controls. Fix what the profile shows rather than what feels likely.
Bulk work follows the same logic. Anything that would mean clicking through hundreds of posts is a WP-CLI job, which is faster, repeatable, and far less prone to the mistake somebody makes on item four hundred. Detail under migration services.
Four ways to engage a WordPress PHP developer, depending on whether something is broken, missing, or about to change.
| Model | Suits | How it works | Typical timeline |
|---|---|---|---|
| PHP version upgrade | Hosts forcing a change | Scan, staging upgrade, fixes, then production | Days to one week |
| Custom plugin build | Functionality nothing provides | Quoted fixed-price once scope is clear | One to four weeks |
| Debugging job | Something is broken now | Diagnosis first, then a quoted fix | Often same day or week |
| Maintenance plan | Ongoing code work | Tested updates plus development hours | Monthly, ongoing |
Rates start at 15 USD per hour, though most work is quoted fixed-price so you know the number before anything begins.
WordPress PHP developer cost, version upgrades, custom plugins, security, debugging, and WP-CLI.
Free 30-minute call. Tell me what is broken or what you need built, and you get a fixed-price quote within 48 hours. Urgent problems usually get looked at the same day.
