Flexible PHP Validation Library: Validate values according to flexible rules

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Version License PHP version Categories
php-flexible-validat 1.0.0The PHP License5PHP 5, Validation
Description Author

This package can validate values according to flexible rules.

It can take an associative array of values and a set of rules and validate the values to verify if they comply with the rules.

The package can validate the values according to a given list of common rules, as well validate the values with custom rules implemented by external validation classes.

Currently it supports the following common validation rules:

- Required value to be present
- Email address
- Maximum limit number
- Require other values to also be present
- Optional
- Value between a given range of numbers
- Image
- Same value as another
- Confirmed by another
- Numeric value

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Flexible PHP Validation Class

Latest Version on Packagist Build Status Quality Score Total Downloads

Provides several different approaches to validate your application's incoming data


You can install the package via composer:

composer require infinitypaul/php-validator

Basic Usage

    $validator =  new Validator([
                'full_name' => 'Edward Paul',
                'email' => 'infinitypaul@live.com'
                'full_name' => ['required'],
                'email' => ['email']
            }else {

Writing The Validation Logic

We pass the field we intend to validate into the Validator class

new Validator([
                'full_name' => 'Edward Paul',
                'email' => 'infinitypaul@live.com'

Validation Rules

we pass the desired validation rules into the setRules() method. Again, if the validation fails, the proper response will save in the ErrorBag. If the validation passes, our validate method returns a true statement.

                'full_name' => ['required'],
                'email' => ['required','email']

Displaying The Validation Errors

So, what if the incoming parameters do not pass the given validation rules? The errors will be able in the getErrors() method like the above


Validation Error Check

You may also use the validate() method to quickly check if validation error messages exist. It returns boolean:

        //There is an error
    }else {
        //No Error

Customizing The Error Key

If you can enter full_name as the key to be validated and required is set, your error message comes out in this format full_name is required You can customize the full_name with the setAliases method.

           'full_name' => 'Full Name',
           'email' => 'Email Address'

Validating Arrays

Validating array doesn't have to be a pain. You may use "dot notation" to validate attributes within an array. For example, if the incoming request contains an array field, you may validate it like so:

$validator =  new Validator([
           'email' => [

           'email' => [

You may also validate each element of an array. For example, to validate that each e-mail in a given array input field is unique, you may do the following:

$validator =  new Validator([
           'user' => [
                  'firstName' => ''
                   'firstName' => 'Paul'

           'user.*.firstName' => [

Custom Validation Rules

You may wish to specify some of your own rules. One method of registering custom validation rules is extending the Rule Class

Once the custom rule class has been created, we are ready to define its behavior. A rule object contains two methods: passes and message. The passes method receives the field, value, and data, and should return true or false depending on whether the value is valid or not. The message method should return the validation error message that should be used when validation fails:

use Infinitypaul\Validator\Rules\Rule;

class Uppercase extends Rule
//Determine if the validation rule passes
 public function passes($field, $value, $data): bool
       return strtoupper($value) === $value;
//Get the validation error message.
public function message($field): string
        return $field.' Must Be Uppercase';


Once the rule has been defined, you may attach it to a validator by passing an instance of the rule object with your other validation rules:

$validator =  new Validator([
           'name' => 'Edward Paul',

           'name' => [
               new Uppercase(),


Available Validation Rules

Below is a list of all available validation rules and their function

Required :

The field under validation must be present in the input data and not empty.

Email :

The field under validation must be formatted as an e-mail address

Max :

The field under validation must be less than or equal to a maximum value

RequiredWith :

The field under validation must be present and not empty only if all of the other specified fields are present.


Between :

The field under validation must have a size between the given min and max


Optional :

The field under validation may be null. This is particularly useful when validating primitive such as strings and integers that can contain null values.


Image :

The file under validation must be an image (jpeg, png, bmp, gif, svg, or webp), the image tmp_name is what you need to pass to the validator

$validator =  new Validator([
           'picture' => $_FILES['image']['tmp_name'],

        'picture' => 'image'
Same :

The given field must match the field under validation.

Confirmed :

The field under validation must have a matching field of foo_confirmation. For example, if the field under validation is password, a matching password_confirmation field must be present in the input.

Numeric :

The field under validation must be numeric.


I intend to keep adding more rules to the package but If you have any additional rules you will like me to add to this, you can reach out to me or open an issue in that regard.

How can I thank you?

Why not star the github repo? I'd love the attention! Why not share the link for this repository on Twitter or HackerNews? Spread the word!

Don't forget to follow me on twitter || or on medium

Thanks! Edward Paul.


Please see CHANGELOG for more information what has changed recently.


Please see CONTRIBUTING for details.

Bug & Features

If you have spotted any bugs, or would like to request additional features from the library, please file an issue via the Issue Tracker on the project's Github page: https://github.com/infinitypaul/php-validator/issues.


The MIT License (MIT). Please see License File for more information.

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src (2 files, 2 directories)
tests (1 file)
.editorconfig Data Auxiliary data
.scrutinizer.yml Data Auxiliary data
.styleci.yml Data Auxiliary data
.travis.yml Data Auxiliary data
CHANGELOG.md Data Auxiliary data
composer.json Data Auxiliary data
CONTRIBUTING.md Data Auxiliary data
LICENSE.md Lic. License text
phpunit.xml.dist Data Auxiliary data
README.md Doc. Read me

  Files  /  .idea  
File Role Description
dictionaries (1 file)
   misc.xml Data Auxiliary data
   modules.xml Data Auxiliary data
   php-validator.iml Data Auxiliary data
   php.xml Data Auxiliary data
   vcs.xml Data Auxiliary data

  Files  /  .idea  /  dictionaries  
File Role Description
   infinitypaul.xml Data Auxiliary data

  Files  /  src  
File Role Description
Errors (1 file)
Rules (11 files)
   RuleMap.php Class Class source
   Validator.php Class Class source

  Files  /  src  /  Errors  
File Role Description
   ErrorBag.php Class Class source

  Files  /  src  /  Rules  
File Role Description
   Between.php Class Class source
   Confirmed.php Class Class source
   Email.php Class Class source
   Image.php Class Class source
   Max.php Class Class source
   Numeric.php Class Class source
   Optional.php Class Class source
   Required.php Class Class source
   RequiredWith.php Class Class source
   Rule.php Class Class source
   Same.php Class Class source

  Files  /  tests  
File Role Description
   ExampleTest.php Class Class source

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