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PHP Validator

PHP Validator is a fast, extensible, and simple PHP validation library that allows you to easily validate various types of data.

Installation

You can install this library via Composer. Ensure your project meets the minimum PHP version requirement of 7.4.

Requirements

• PHP version 7.4 or higher
• Required package for PSR-7 HTTP Message (e.g., guzzlehttp/psr7)

Usage

The PHP Validator library enables you to validate data in a simple and flexible manner using pre-configured validation rules. Here are some usage examples:

Example 1: Email Address Validation

Validate an email address to ensure it is not null and matches the standard email format.

Example 2: Age Validation

Validate the age to ensure it is a non-null integer and is 18 or older.

Additional Examples

Let's explore more examples covering various validators:

Username Validation

Ensure that a username is not null, has a minimum length of 3 characters, and contains only alphanumeric characters.

URL Validation

Validate a URL to ensure it is not null and is a valid URL format.

Numeric Value Validation

Validate a numeric value to ensure it is not null and represents a valid numeric value.

Custom Validation Rule

Implement a custom validation rule using a callback function.

Certainly! Below is a chapter you can add to your README specifically covering examples for using the validate(ServerRequestInterface $request) method from your Validation class.

Using validate(ServerRequestInterface $request) Method

The Validation class provides a convenient method validate(ServerRequestInterface $request) to validate data extracted from a \Psr\Http\Message\ServerRequestInterface object. This method simplifies the process of validating request data typically received in a web application.

Example 1: Validating User Registration Form

Suppose you have a user registration form with fields like username, email, password, and age. Here's how you can use the validate method to validate this form data:

In this example:

• We instantiate a Validation object with validation rules defined for each field (username, email, password, age).
• We call the validate method with the $request object containing form data.
• If validation passes (validate method returns true), we retrieve the validated data using $validation->getData() and proceed with the registration logic.
• If validation fails, we retrieve the validation errors using $validation->getErrors() and handle them accordingly.

Example 2: Validating API Input Data

Consider validating input data received via an API endpoint. Here's how you can use the validate method in this context:

In this example:

• We define validation rules for product_id and quantity.
• We call the validate method with the $request object containing API input data.
• If validation passes, we retrieve the validated data using $validation->getData() and proceed with processing the API request.
• If validation fails, we retrieve the validation errors using $validation->getErrors() and handle them appropriately.

Additional Features

• Simple Interface: Easily define validation rules using a straightforward interface.
• Extensible: Extend the library with custom validation rules by implementing the RuleInterface.
• Error Handling: Retrieve detailed validation errors for each field.

License

This library is open-source software licensed under the MIT license.