validate_email

The timeline below displays how wordpress function validate_email has changed across different WordPress versions. If a version is not listed, refer to the next available version below.

WordPress Version: 5.5

/**
 * Deprecated functionality to validate an email address.
 *
 * @since MU (3.0.0)
 * @deprecated 3.0.0 Use is_email()
 * @see is_email()
 *
 * @param string $email        Email address to verify.
 * @param bool   $check_domain Deprecated.
 * @return string|false Valid email address on success, false on failure.
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0.0', 'is_email()');
    return is_email($email, $check_domain);
}

WordPress Version: 4.9

/**
 * Deprecated functionality to validate an email address.
 *
 * @since MU (3.0.0)
 * @deprecated 3.0.0 Use is_email()
 * @see is_email()
 *
 * @param string $email        Email address to verify.
 * @param bool   $check_domain Deprecated.
 * @return string|bool Either false or the valid email address.
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0.0', 'is_email()');
    return is_email($email, $check_domain);
}

WordPress Version: 4.6

/**
 * Deprecated functionality to validate an email address.
 *
 * @since MU
 * @deprecated 3.0.0 Use is_email()
 * @see is_email()
 *
 * @param string $email        Email address to verify.
 * @param bool   $check_domain Deprecated.
 * @return string|bool Either false or the valid email address.
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0.0', 'is_email()');
    return is_email($email, $check_domain);
}

WordPress Version: 4.5

/**
 * Deprecated functionality to validate an email address.
 *
 * @since MU
 * @deprecated 3.0.0 Use is_email()
 * @see is_email()
 *
 * @param string $email        Email address to verify.
 * @param bool   $check_domain Deprecated.
 * @return string|bool Either false or the valid email address.
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0', 'is_email()');
    return is_email($email, $check_domain);
}

WordPress Version: 4.4

/**
 * Deprecated functionality to validate an email address.
 *
 * @since MU
 * @deprecated 3.0.0 Use is_email()
 * @see is_email()
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0', 'is_email()');
    return is_email($email, $check_domain);
}

WordPress Version: 3.7

/**
 * @since MU
 * @deprecated 3.0.0
 * @deprecated Use is_email()
 * @see is_email()
 */
function validate_email($email, $check_domain = true)
{
    _deprecated_function(__FUNCTION__, '3.0', 'is_email()');
    return is_email($email, $check_domain);
}