What is developing-with-php?

A skill for writing modern PHP 8.x code, including its type system, object-oriented patterns, errors, and Composer package management. Composer is PHP's tool for installing and loading libraries.

Use it to write PHP applications, define typed classes and functions, manage Composer dependencies, access databases with PDO, and add PHPUnit tests.

It helps keep PHP code consistent with current language features and avoids common problems with types, dependencies, and error handling.

developing-with-php — Skill for Claude Code by FortiumPartners

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add FortiumPartners/ensemble --skill developing-with-php

Clone the repo

git clone --depth 1 https://github.com/FortiumPartners/ensemble

Made for: Claude Code.

Or install ensemble-development, the plugin that ships this one along with the rest of its 11 skills, 7 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/fortiumpartners/ensemble/developing-with-php/github.svg)](https://agentmods.dev/skills/fortiumpartners/ensemble/developing-with-php)

Your own site

<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/developing-with-php"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/developing-with-php/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/developing-with-php"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/developing-with-php.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,069 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00037	$0.03069
Opus 5.5	$0.00015	$0.01228
Sonnet 5.5	$0.00007	$0.00614
Haiku 4.5	$0.00004	$0.00307

Measured 1mo ago against content hash f7a524172bfe, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

developing-with-php scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

$user = $stmt->fetch(PDO::FETCH_ASSOC);

packages/development/skills/developing-with-php/SKILL.md · 514 lines

How it starts

The opening of the file, as written. The whole thing — 514 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PHP Skill - Quick Reference

Core PHP language patterns for modern development. For Laravel-specific patterns, see the Laravel skill.

Progressive Disclosure: This is the quick reference. See REFERENCE.md for comprehensive patterns, advanced examples, and deep-dives.

PHP 8.x Type System
Constructor Property Promotion
Enums
Match Expression & Named Arguments
Attributes
Null Safety
OOP Essentials
Handler/Service Pattern
Map/DTO Pattern
PDO Database Access
Composer & Autoloading
Error Handling
Testing with PHPUnit
Array Operations Quick Reference
Security Essentials
Quick Reference Tables
Related Resources

PHP 8.x Type System

<?php
// Union types (8.0+)
function process(string|int $value): string|false { }

// Intersection types (8.1+)
function handle(Countable&Iterator $collection): void { }

// Nullable types
function find(int $id): ?User { }

// Never return type (8.1+)
function fail(): never {
    throw new Exception('Fatal error');
}

// True, false, null as standalone types (8.2+)
function isValid(): true { return true; }

Constructor Property Promotion

<?php
// Promoted properties (8.0+) - replaces boilerplate
class User {
    public function __construct(
        private string $name,
        private string $email,
        private bool $active = true,
    ) {}
}

// Readonly class (8.2+) - all properties are readonly
readonly class ValueObject {
    public function __construct(
        public string $value,
        public DateTimeImmutable $createdAt,
    ) {}
}

Read the full file on GitHub · 514 lines

Files

What ships with it

13 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 514 lines · 37 tokens per session scan A f7a524172bfe

Subscribe to this mod's changes

developing-with-php is a skill published in the GitHub repository FortiumPartners/ensemble (12 stars, last pushed 2d ago), licensed MIT. It adds 37 tokens to every session and 3,069 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Claude Code Languages PHP ai-development claude cli development-tools nodejs

laravel

Use when building or extending a Laravel 11/12 app — Eloquent models, migrations and relationships, routing with controllers and Form Requests, queues and background jobs, framework-native security (validation, mass-assignment, policies, signed URLs, rate limiting), and Pest/PHPUnit feature tests. NOT pure PHP…

ericrisco/rsc-harness · 76 tokens

yao-geoflow-template

Use only for explicit legacy GEOFlow template skill questions, old PHP template-package contracts, or historical outputs using root index.php/article.php/category.php/archive.php and includes/.php. Route current Laravel Blade themes, reference-site cloning, homepage modules, leadform, theme editor, channel frontend…

yaojingang/yao-geo-skills · 94 tokens

kirby-ide-support

Improves IDE autocomplete and static analysis in Kirby projects with PHPDoc hints and Kirby IDE helper generation. Use when types are missing or IDE support is degraded.

bnomei/kirby-mcp · 37 tokens

code-review-php

Deep PHP-specific code review covering strict types, PHPStan compliance, PSR standards, domain modeling, and ORM boundary violations. Applied in addition to the generic code-review skill when PHP code is detected. Invoked when reviewing PHP PRs, Symfony/Laravel changes, or performing PHP-specific quality checks.

soulcodex/agentic · 66 tokens

cli-forge-data

Design and implement safe PostgreSQL database changes for Rust/SQLx applications. Use for new schemas, migrations, constraints, indexes, repositories, transaction boundaries, state machines, idempotency, concurrency control, queues, multi-tenancy, soft deletion, ledgers, outbox/inbox, repair jobs, or corrections…

Destynova2/cli-code-skills · 76 tokens

php-laravel

When to use: PHP or Laravel work — Eloquent, middleware, validation, queues, migrations, testing.

Effulgent-Point/paw · 0 tokens

developing-with-php