JSON to PHP Converter

JSON (JavaScript Object Notation) is used for REST API responses, configuration files, NoSQL documents. Writing PHP models from JSON by hand is repetitive and error-prone. This converter automates that step entirely — paste your JSON, get PHP models instantly.

Generate PHP classes with typed properties and constructor promotion for modern PHP 8.x codebases.

How to use this converter

1. Paste your JSON into the left editor panel
2. Click Generate
3. Copy the generated PHP code from the right panel

No account. No upload. No tracking. Runs entirely in your browser.

Example PHP output

<?php
 
class Address {
    public function __construct(
        public readonly string $city,
        public readonly string $zip,
    ) {}
 
    public static function fromArray(array $data): self {
        return new self(
            city: $data['city'],
            zip: $data['zip'],
        );
    }
}

The problem with manual JSON-to-PHP mapping

PHP is a dynamically typed, server-side scripting language — typed data models are central to how it works. Yet copying fields from JSON payloads into PHP class definitions introduces subtle errors:

• Mistyped field names cause silent deserialization failures
• Missing optional fields trigger runtime panics or null errors
• Schema drift between API and model goes undetected until production

PHP 8 typed properties and constructor promotion allow clean, concise data models — this converter targets modern PHP 8+ syntax.

This converter eliminates the manual step entirely.

PHP and JSON: what you need to know

PHP is a dynamically typed, server-side scripting language, powers Laravel, Symfony, and a large portion of the web. It uses class-based with typed properties for structured data — making it a natural fit for JSON-driven applications.

What the converter generates

Output uses PHP 8 constructor promotion with typed properties and readonly modifiers where appropriate. Includes fromArray static factory methods and follows PSR-12 coding standards.

A common gotcha

PHP's loose type coercion can mask type mismatches — adding declare(strict_types=1) enforces strict mode.

JSON input characteristics

JSON supports nested objects, arrays, strings, numbers, booleans, and null. Tools like jq, Postman, and browser DevTools make JSON the most developer-friendly data exchange format.

When should I use this converter?

Use this for Laravel or Symfony projects where you need clean, typed DTO classes from API responses — avoiding raw array access throughout your codebase.

Common use cases

• Generating typed DTOs for Laravel API resources and form requests
• Creating value objects for Symfony components consuming external APIs
• Producing typed models for PHP CLI scripts processing configuration files
• Creating typed DTOs for WordPress plugins
• Rapid prototyping with real JSON payloads
• Keeping PHP structs in sync when JSON schemas evolve
• Onboarding new team members by auto-generating the data layer
• Validating JSON contract compatibility with PHP type definitions
• Generating PHP models from Laravel/Symfony APIs API responses

Frequently asked questions

What serialization library does the generated PHP code assume?

The generated code is compatible with the standard PHP serialization ecosystem — PHP 8 classes with typed constructor properties. No unusual dependencies required.

What version of PHP does the output target?

The converter targets modern PHP conventions — PHP 8 classes with typed constructor properties. If you need output for an older version, the generated code can typically be adapted with minor changes.

Is my JSON data sent to a server?

No. All conversion runs locally in your browser using client-side JavaScript. Your JSON data never leaves your machine.

What JSON inputs does this converter accept?

Paste any valid JSON — including REST API responses, configuration files, NoSQL documents. The converter infers types and generates a matching PHP model.

Related tools on LangStop

• JSON Formatter & Validator
• JSON to Python Converter
• JSON to Go Converter
• JSON to Java Converter
• JSON to JSON Schema

If you work frequently with JSON and PHP, bookmark this page to skip the manual model-writing step entirely.