任何人都可以帮我解决错误:::解析错误：语法错误，第14行/localhost/braintree/app.php中的意外T_FUNCTION

Question

<?php

require_once 'braintree-php-2.14.0/lib/Braintree.php';
require_once __DIR__ . 'silex/vendor/autoload.php';
Braintree_Configuration::environment('sandbox');
Braintree_Configuration::merchantId('...');
Braintree_Configuration::publicKey('...');
Braintree_Configuration::privateKey('...');
$app = new Silex\Application();
$app->get('/', function () {
    include 'views/form.php';
});
$app->run();
//$app->get("/braintree-php-2.14.0", function () {
$app->get("/braintree", function () {
   include 'views/response.php';
});
?>

this is braintree payments system i read the documentation clearly but not solved.error is found in this line 14: $app->get("/braintree", function () {

Answer 1

It looks like the problem is that anonymous functions are only available in PHP 5.3+. If at all possible I'd suggest upgrading your server to the newest version of PHP available, 5.4.7.

Another issue might be that you're calling $app->run() before you add the response hook, so I'd move the run() call to the end.

If you can't upgrade PHP then the following fix should work:

<?php
require_once 'braintree-php-2.14.0/lib/Braintree.php';
require_once __DIR__ . 'silex/vendor/autoload.php';
Braintree_Configuration::environment('sandbox');
Braintree_Configuration::merchantId('...');
Braintree_Configuration::publicKey('...');
Braintree_Configuration::privateKey('...');
$app = new Silex\Application();
function form() {
  include 'views/form.php';
}
$app->get('/', form);
function response() {
  include 'views/response.php';
}
$app->get("/braintree", response);
$app->run();
?>

The other reason I really like PHP 5.4 is that it includes a lightweight (ie not for production) server that makes testing and debugging a lot easier. I'm a Braintree dev and wrote the guide this came from so I hope this helps!