Email

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Validates that a value is a valid email address. The underlying value is cast to a string before being validated.

Applies to	property or method
Options	strict message checkMX checkHost payload groups
Class	Email
Validator	EmailValidator

Basic Usage

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        // src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\Email(
     *     message = "The email '{{ value }}' is not a valid email.",
     *     checkMX = true
     * )
     */
    protected $email;
}
    

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        # src/AppBundle/Resources/config/validation.yml
AppBundle\Entity\Author:
    properties:
        email:
            - Email:
                message: The email "{{ value }}" is not a valid email.
                checkMX: true
    

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        <!-- src/AppBundle/Resources/config/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="AppBundle\Entity\Author">
        <property name="email">
            <constraint name="Email">
                <option name="message">The email "{{ value }}" is not a valid email.</option>
                <option name="checkMX">true</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

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        // src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

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

class Author
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('email', new Assert\Email([
            'message' => 'The email "{{ value }}" is not a valid email.',
            'checkMX' => true,
        ]));
    }
}
    

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

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

`strict`

type: boolean default: false

When false, the email will be validated against a simple regular expression. If true, then the egulias/email-validator library is required to perform an RFC compliant validation.

`message`

type: string default: This value is not a valid email address.

This message is shown if the underlying data is not a valid email address.

You can use the following parameters in this message:

Parameter	Description
`{{ value }}`	The current (invalid) value

`checkMX`

type: boolean default: false

If true, then the checkdnsrr PHP function will be used to check the validity of the MX record of the host of the given email.

Caution

This option is not reliable because it depends on the network conditions and some valid servers refuse to respond to those requests.

`checkHost`

type: boolean default: false

If true, then the checkdnsrr PHP function will be used to check the validity of the MX or the A or the AAAA record of the host of the given email.

`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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