Solo ValidatorPHP Validation Library

Lightweight, flexible validation with custom rules and structured errors.

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✅

Built-in Rules

Required, email, phone, uuid, min, max, length, numeric, date, and more.

🔧

Custom Rules

Extend validation with your own rules via simple callbacks.

📦

Structured Errors

Get machine-readable error objects with rule names and parameters.

🎯

Parameterized Rules

Define rules with parameters like min:8, max:100, in:a,b,c.

📱

Phone Validation

International phone number validation via libphonenumber.

🪶

Lightweight

Minimal dependencies, PSR-4 compliant, easy to integrate.

Quick Example

php

use Solo\Validator\Validator;

$validator = new Validator();

$data = [
    'email' => 'user@example.com',
    'username' => 'john_doe',
    'age' => 25,
];

$rules = [
    'email' => 'required|email',
    'username' => 'required|min:3|max:20',
    'age' => 'integer|min_value:18',
];

$errors = $validator->validate($data, $rules);

if ($validator->fails()) {
    // Structured errors: ['field' => [['rule' => 'email'], ...]]
    print_r($validator->errors());
} else {
    echo "Validation passed!";
}

Installation

bash

composer require solophp/validator

Requirements: PHP 8.1+