找不到PHP类DateTime [英] PHP Class DateTime not found

问题描述

在 PHP 5.3.8 中声明DateTime对象时缺少某些内容$ p
$ b

我得到了一个带有确定日期时间的JSON字符串，该字符串已传递

出于某种原因，我没有将其映射为php中的DateTime对象。但是有点奇怪。看到以下图像：

1. 正如您在表达式窗口（右上方）中看到的那样，在执行此步骤之前，我正在检查新的DateTime（myVariable）正在带来并正确转换我所需要的东西。在第一个监视中，将变量传递给DateTime构造函数。在第二个监视中，表达式newDateTime（myVariable）已映射为DateTimeObject。

   
   
   




2. 但是，可悲的是，当我前进并按F6时，会抛出以下豁免项（另请参见下图）：

    致命错误：在/ Users / pgbonino / Sites / Symfony / src / Acme /中找不到类'Acme\StoreBundle\Repository\DateTime'第19行的StoreBundle / Repository / HistoryRepository.php 
    
   调用堆栈：
    0.0201 693568 1. {main}（）/Users/pgbonino/Sites/Symfony/web/app_dev.php:0 
    0.0267 2106576 2. Symfony\组件\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\组件\HttpKernel\HttpKernel-> handle（???，???，???）/ Users / pgbonino / Sites / Symfon y / 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 
     

因此，奇怪的是，Eclipse的Watch Expressions窗口不能像执行引擎，反之亦然。

当然，我更喜欢b相反（它在执行中起作用，而不是在监视窗口中起作用：））。

那么，有什么想法吗？

解决方案

您当前位于 Acme\StoreBundle\Repository\DateTime napespace中。在这种情况下，要寻址默认名称空间，您需要在类名前加上前导 \ ，例如

  $ dt = new \DateTime（...）; 
  

so

  namespace foo; 
 $ obj = new class（）; 
  

将尝试在< class 定义中找到 foo 命名空间。

并且

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

将尝试在全局变量中查找 class 的定义

作为替代方案，您可以使用

 导入类。使用\DateTime; 
  

或创建别名（以防在当前NS中已有相同名称的类）：

 使用\DateTime作为NewDT； 
  

Missing something when declaring a DateTime object in PHP 5.3.8

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

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:

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
   

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

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

So, any idea?

解决方案

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

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

so

namespace foo;
$obj = new class();

will try to find class definition within foo namespace.

And

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

will try to find class definition within global namespace.

As an alternative you could import the class using

use \DateTime;

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

use \DateTime as NewDT;

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