未找到 PHP 类 DateTime

PHP Class DateTime not found

提问by ElPiter

Missing something when declaring a DateTime object in PHP 5.3.8

在PHP 5.3.8 中声明 DateTime 对象时遗漏了一些东西

I get a JSON string with a determinate date time which is passed to my php controller.

我得到一个带有确定日期时间的 JSON 字符串，该字符串被传递给我的 php 控制器。

For some reason, I am not getting it to be mapped as a DateTime object in php. But sort of weirdly. See the following images:

出于某种原因，我没有将它映射为 php 中的 DateTime 对象。但有点奇怪。请参阅以下图片：

1. As you can see in the Expressions Window (top right), BEFORE the step, I am checking that new DateTime(myVariable) is bringing and transforming correctly what I need. In the first watch, the variable to pass to DateTime constructor. In the second watch, the expression newDateTime(myVariable) already mapped as a DateTimeObject. Apparently fine up to here.

   

2. But, sadly, when I go forward and press F6, the following exemption (see also the image below) is thrown:

   Fatal error: Class 'Acme\StoreBundle\Repository\DateTime' not found in /Users/pgbonino/Sites/Symfony/src/Acme/StoreBundle/Repository/HistoryRepository.php on line 19
   
   Call Stack:
       0.0201     693568   1. {main}() /Users/pgbonino/Sites/Symfony/web/app_dev.php:0
       0.0267    2106576   2. Symfony\Component\HttpKernel\Kernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/web/app_dev.php:24
       0.0377    2649176   3. Symfony\Bundle\FrameworkBundle\HttpKernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/app/bootstrap.php.cache:547
       0.0378    2650832   4. Symfony\Component\HttpKernel\HttpKernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:4879
       0.0378    2650832   5. Symfony\Component\HttpKernel\HttpKernel->handleRaw(???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3875
       0.1574    5562232   6. call_user_func_array(???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3905
       0.1574    5562600   7. Acme\StoreBundle\Controller\HistoryController->saveTestAction() /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3905
       0.1694    5739032   8. Acme\StoreBundle\Repository\HistoryRepository->saveTestInHistory(???, ???) /Users/pgbonino/Sites/Symfony/src/Acme/StoreBundle/Controller/HistoryController.php:33
   

   

1. 正如您在表达式窗口（右上角）中看到的那样，在此步骤之前，我正在检查 new DateTime(myVariable) 是否正确地带来并转换了我需要的内容。在第一个 watch 中，传递给 DateTime 构造函数的变量。在第二个监视中，表达式 newDateTime(myVariable) 已经映射为 DateTimeObject。到这里显然还好。

   

2. 但是，遗憾的是，当我继续按 F6 时，会抛出以下豁免（另请参见下图）：

   Fatal error: Class 'Acme\StoreBundle\Repository\DateTime' not found in /Users/pgbonino/Sites/Symfony/src/Acme/StoreBundle/Repository/HistoryRepository.php on line 19
   
   Call Stack:
       0.0201     693568   1. {main}() /Users/pgbonino/Sites/Symfony/web/app_dev.php:0
       0.0267    2106576   2. Symfony\Component\HttpKernel\Kernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/web/app_dev.php:24
       0.0377    2649176   3. Symfony\Bundle\FrameworkBundle\HttpKernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/app/bootstrap.php.cache:547
       0.0378    2650832   4. Symfony\Component\HttpKernel\HttpKernel->handle(???, ???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:4879
       0.0378    2650832   5. Symfony\Component\HttpKernel\HttpKernel->handleRaw(???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3875
       0.1574    5562232   6. call_user_func_array(???, ???) /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3905
       0.1574    5562600   7. Acme\StoreBundle\Controller\HistoryController->saveTestAction() /Users/pgbonino/Sites/Symfony/app/cache/dev/classes.php:3905
       0.1694    5739032   8. Acme\StoreBundle\Repository\HistoryRepository->saveTestInHistory(???, ???) /Users/pgbonino/Sites/Symfony/src/Acme/StoreBundle/Controller/HistoryController.php:33
   

   

So, strangely, the Watch Expressions window from Eclipse is not working just like the execution engine and/or vice-versa.

因此，奇怪的是，Eclipse 的 Watch Expressions 窗口不像执行引擎那样工作，反之亦然。

Of course, I'd prefer it to be the opposite (It worked in the execution and not in the watch window :) ).

当然，我更希望它是相反的（它在执行中起作用，而不是在监视窗口中起作用 :)）。

So, any idea?

那么，有什么想法吗？

回答by zerkms

You're currently in the Acme\StoreBundle\Repository\DateTimenapespace. To address to the default namespace in this case you need to put leading \before your classname, like

你目前在Acme\StoreBundle\Repository\DateTime后宫。在这种情况下，要寻址到默认命名空间，您需要\在类名之前放置前导，例如

$dt = new \DateTime(...);

so

所以

namespace foo;
$obj = new class();

will try to find classdefinition within foonamespace.

将尝试class在foo命名空间中找到定义。

And

和

namespace foo;
$obj = new \class();

will try to find classdefinition within global namespace.

将尝试class在全局命名空间中找到定义。

As an alternative you could import the class using

作为替代方案，您可以使用

use \DateTime;

or create alias (in case if you already have the class with the same name in current NS):

或创建别名（如果您在当前 NS 中已经有同名的类）：

use \DateTime as NewDT;

回答by marcelog

I guess You're using namespaces and trying to use DateTime (relative to the current namespace) instead of \DateTime (the full qulified class name)

我猜您正在使用命名空间并尝试使用 DateTime（相对于当前命名空间）而不是 \DateTime（完整的合格类名）