Validation

PhalconValidation is an independent validation component to validate an arbitrary set of data. This component can be used to implement validation rules that does not belong to a model or collection.

The following example shows its basic usage:

use Phalcon\Validation\Validator\PresenceOf,
        Phalcon\Validation\Validator\Email;

$validation = new Phalcon\Validation();

$validation->add('name', new PresenceOf(
        'message' => 'The name is required'
));

$validation->add('email', new PresenceOf(
        'message' => 'The e-mail is required'
));

$validation->add('email', new Email(
        'message' => 'The e-mail is not valid'
));

$messages = $validation->validate($_POST);
if (count($messages)) {
        foreach ($messages as $message) {
                echo $message, '<br>;
        }
}

Validators

Phalcon exposes a set of built-in validators for this component:

Name	Explanation	Example
PresenceOf	Validates that a field’s value isn’t null or empty string.	Example
Email	Validates that field contains a valid email format	Example
ExclusionIn	Validates that a value is not within a list of possible values	Example
InclusionIn	Validates that a value is within a list of possible values	Example
Regex	Validates that the value of a field matches a regular expression	Example
StringLength	Validates the length of a string	Example

Additional validators can be created by the developer. The following class explains how to create a validator for this component: