IBAN

This constraint is used to ensure that a bank account number has the proper format of an International Bank Account Number (IBAN). IBAN is an internationally agreed means of identifying bank accounts across national borders with a reduced risk of propagating transcription errors.

Applies to	property or method
Class	Iban
Validator	IbanValidator

Basic Usage

To use the IBAN validator, apply it to a property on an object that will contain an International Bank Account Number.

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        // src/Entity/Transaction.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Transaction
{
    #[Assert\Iban(
        message: 'This is not a valid International Bank Account Number (IBAN).',
    )]
    protected string $bankAccountNumber;
}
    

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        # config/validator/validation.yaml
App\Entity\Transaction:
    properties:
        bankAccountNumber:
            - Iban:
                message: This is not a valid International Bank Account Number (IBAN).
    

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        <!-- config/validator/validation.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="App\Entity\Transaction">
        <property name="bankAccountNumber">
            <constraint name="Iban">
                <option name="message">
                    This is not a valid International Bank Account Number (IBAN).
                </option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

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        // src/Entity/Transaction.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\Mapping\ClassMetadata;

class Transaction
{
    // ...

    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('bankAccountNumber', new Assert\Iban([
            'message' => 'This is not a valid International Bank Account Number (IBAN).',
        ]));
    }
}
    

Note

As with most of the other constraints, null and empty strings are considered valid values. This is to allow them to be optional values. If the value is mandatory, a common solution is to combine this constraint with NotBlank.

Options

`groups`

type: array | string default: null

It defines the validation group or groups of this constraint. Read more about validation groups.

`message`

type: string default: This is not a valid International Bank Account Number (IBAN).

The default message supplied when the value does not pass the IBAN check.

You can use the following parameters in this message:

Parameter	Description
`{{ value }}`	The current (invalid) value
`{{ label }}`	Corresponding form field label

`payload`

type: mixed default: null

This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to you.

For example, you may want to use several error levels to present failed constraints differently in the front-end depending on the severity of the error.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.

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