JSON Schema for PHP

Validate, interpret, and work with JSON Schemas in PHP — fully compatible with the specifications.

Standards Compliant

Implements the official JSON Schema specification (Draft 3 and 4), ensuring predictable and reliable validation.

Developer Friendly

Simple, expressive API designed for modern PHP projects. Integrates easily into frameworks like Laravel, Symfony, and more.

Extensible

Built with extensibility in mind — customize validation rules, add formats, or adapt to domain-specific requirements.

Example



$schema = json_decode(file_get_contents('person.schema.json'));
$data = json_decode('{"name": "Alice", "age": 30}');

$validator = new \JsonSchema\Validator();
$validator->validate($data, $schema);

if ($validator->isValid()) {
    echo "✅ The supplied JSON validates against the schema.\n";
} else {
    echo "❌ JSON does not validate. Violations:\n";
    foreach ($validator->getErrors() as $error) {
        printf("[%s] %s\n", $error['property'], $error['message']);
    }
}