PHP提交后重定向到页面

Question

我正在尝试重定向PHP联系表单电子邮件脚本，以便在提交后将用户重定向到新页面。目前，它发送电子邮件，并在页面底部输出：[“”]

我尝试在底部添加它，但它给了我一个错误：

header("Location: page2.php");

我使用的PHP看起来像这样：

<?php

function send_json( $success = true, $data = '') {
    $response = array('');
    if ( ! empty($data)) {
        $response['data'] = $data;
    }
    echo json_encode($response);
    die;
}

function validate($name, $email) {
    $errors = array();
    if (null == $name) {
        $errors['name'] = 'Enter your name';
    }
    if (null == $email || false === $email) {
        $errors['email'] = 'Enter correct email';
    }
    // If errors - die
    if ( ! empty($errors)) {
        send_json(false, $errors);
    }
}

if (empty($_POST)) {
    exit;
}

// Load Config file
$ini = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'config.ini';
$config = parse_ini_file( $ini );

// Receive and validate data
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING );
$email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);
$company = filter_input(INPUT_POST, 'company', FILTER_SANITIZE_STRING);
$referral = filter_input(INPUT_POST, 'referral', FILTER_SANITIZE_STRING);
$phone = filter_input(INPUT_POST, 'phone', FILTER_SANITIZE_STRING);
// Do validate
validate($name, $email);

// If validate success
$body = " From: $name\n\n E-Mail: $email\n\n Address: $company\n\n Phone: $phone\n\n Referral: $referral\n\n";

// Send email
$to = $config['to'];
$subject = $config['subject'];

// From and Reply-To are the same
$from = sprintf( '%1$s <%2$s>', $name, $email);

$headers = array();
$headers[] = sprintf('From: %s', $from);
$headers[] = sprintf('Reply-To: %s', $from);
$headers[] = sprintf('X-Mailer: PHP/%s', phpversion());
$headers[] = 'MIME-Version: 1.0';

// Convert headers from array to string
$headers = implode("\r\n", $headers);

mail($to, $subject, $body, $headers);
send_json(); ?>

这个.js也是邮件的一部分：

(function () {
    /**
     * Element, where ajax response will be printed.
     * @type {*|jQuery|HTMLElement}
     */
    var responseHolder = $('.response-holder');
    function mailer_response_success(data) {
        var data = data || 'You have submitted an estimate for review. Thank you!';
        responseHolder.addClass('success').html('<div class="inner">' + data + '</div>');
    }

    function mailer_response_error(data) {
        var message = ('string' == typeof data) ? data : 'Sorry, AJAX error occurred';
        // If data not a scalar sting
        if ('object' == typeof data) {
            var a = [];

            $.each(data, function(key, value) {
                a.push(value);
            });
            message = a.join('<br>');
        }

        responseHolder.addClass('error').html('<div class="inner">' + message + '</div>');
    }

    // Mailer form handler
    $(document).on('submit', '#ajax-form', function (e) {
        // Stop form submitting
        e.preventDefault();
        var form = $( this),
            formdata = form.serializeArray();

        responseHolder.html('');
        responseHolder.removeClass('success error');

        // Data validation here?
        $.ajax({
            url: 'mailer/mailer.php',
            type: 'POST',
            dataType: 'json',
            data: formdata,
            error: function(xhr, status, error) {
                console.log(['kennedy.mailer.error', status, error, xhr.responseText]);
            },
            success: function(response) {
                console.log(response);
                if (response.success.length !== 0 && true == response.success) {
                    mailer_response_success();
                } else {
                    mailer_response_error(response.data);
                }
            }
        });
    });
})();