PHP Rakit Validation
last modified January 10, 2023
PHP Rakit Validation tutorial shows how to validate PHP values with Rakit Validation package.
$ php -v php -v PHP 8.1.2 (cli) (built: Aug 8 2022 07:28:23) (NTS) ...
We use PHP version 8.1.2.
Rakit Validation
Rakit Validation is a PHP Standalone Validation Library. It was
inspired by Laravel's Illuminate\Validation.
Installation
$ composer require rakit/validation $ composer require tightenco/collect
We install the Rakit Validation package and the Laravel's collection package.
Simple example
In the first example, we show how to do a very simple validation.
<?php
require('vendor/autoload.php');
use Rakit\Validation\Validator;
$validator = new Validator;
$vals = ['name' => ''];
$rules = ['name' => 'required'];
$validation = $validator->make($vals, $rules);
$validation->validate();
if ($validation->fails()) {
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
} else {
echo "Validation passed";
}
The example validates one required value.
use Rakit\Validation\Validator;
We include the validator.
$validator = new Validator;
We create the instance of the Validator.
$vals = ['name' => '']; $rules = ['name' => 'required'];
The $vals contains the values to be validated. The
$rules contains the validation rules. In our case, the
name value is required.
$validation = $validator->make($vals, $rules);
With the make method we prepare the validation; we pass the values
and the rules.
$validation->validate();
We perform the validation with validate.
if ($validation->fails()) {
With fails we check if the validation failed.
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
We use the Laravel's collections to parse the errors.
$ php simple.php The Name is required
This is the output.
Validation rules
Rakit Validation contains a set of predefined rules, such as required,
email, min, max, or url.
The rules can be combined with the | character.
<?php
require 'vendor/autoload.php';
use Rakit\Validation\Validator;
$validator = new Validator;
$vals = ['name' => 'John Doe', 'email' => 'johndoe#gmail.com',
'password' => '12345', 'confirm_password' => '23456'];
$rules = ['name' => 'required',
'email' => 'required|email',
'password' => 'required|min:6',
'confirm_password' => 'required|same:password'];
$validation = $validator->make($vals, $rules);
$validation->validate();
if ($validation->fails()) {
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
} else {
echo "Validation passed";
}
The example uses several validation rules.
$rules = ['name' => 'required',
'email' => 'required|email',
'password' => 'required|min:6',
'confirm_password' => 'required|same:password'];
We have four validation rules. The email is required must be a
valid email address. The password is required and must have at
least six characters. The confirm_password must be the same as the
password.
$ php rules.php The Email is not valid email The Password minimum is 6 The Confirm password must be same with password
The example finished with three validation failures.
Validating dates
The next example shows how to validate dates.
<?php
require('vendor/autoload.php');
use Rakit\Validation\Validator;
$validator = new Validator;
$vals = ['born' => '2000-03-30', 'meetingDate' => '2010-12-31'];
$rules = ['born' => 'before:2018-12-31', 'meetingDate' => 'after:2019-02-02'];
$validation = $validator->make($vals, $rules);
$validation->validate();
if ($validation->fails()) {
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
} else {
echo "Validation passed";
}
The example validates two dates.
$vals = ['born' => '2000-03-30', 'meetingDate' => '2010-12-31']; $rules = ['born' => 'before:2018-12-31', 'meetingDate' => 'after:2019-02-02'];
With the before rule, we validate that the given date is before some
date and with the after rule, we validate that the given date is after
some date.
$ php dates.php The MeetingDate must be a date after 2019-02-02.
This is the output.
Custom messages
We can provide custom validation messages. The messages are passed as the third
parameter to the make method.
<?php
require('vendor/autoload.php');
use Rakit\Validation\Validator;
$validator = new Validator;
$vals = ['name' => ''];
$rules = ['name' => 'required'];
$msgs = ['name' => 'The name is compulsory'];
$validation = $validator->make($vals, $rules, $msgs);
$validation->validate();
if ($validation->fails()) {
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
} else {
echo "Validation passed";
}
The example adds a custom message.
$msgs = ['name' => 'The name is compulsory'];
This is our custom message.
$validation = $validator->make($vals, $rules, $msgs);
The messages are passed to the make method.
$ php custom_message.php The name is compulsory
This is the output.
Validating GET data
In the following example, we validate GET data.
<?php
require('vendor/autoload.php');
use Rakit\Validation\Validator;
$validator = new Validator;
$rules = ['name' => 'required', 'email' => 'required|email'];
$validation = $validator->make($_GET, $rules);
$validation->validate();
if ($validation->fails()) {
$coll = collect($validation->errors());
$messages = $coll->flatten();
foreach ($messages as $message) {
echo $message . "\n";
}
} else {
echo "Validation passed";
}
The example validates name and email parameters from a GET request.
$rules = ['name' => 'required', 'email' => 'required|email']; $validation = $validator->make($_GET, $rules);
The make method takes the global $_GET variable
as the first parameter.
$ php -S localhost:8000 [Wed Jul 13 15:08:56 2022] PHP 8.1.2 Development Server (http://localhost:8000) started
We start the built-in web server.
$ curl "localhost:8000/get_data.php?name=John%20Doe&email=john.doe#gmail.com" The Email is not valid email
We create a GET request with two parameters with the curl tool.
In this article we have used Rakit Validation to validate PHP values.
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