symfony2 学说 2 中的 var_dump 数据过多

Question

I have around 40 entities and many bidirectional relationships. Whenever i use var_dump($user) or any entity my browser gets loaded with too much data of arrays and variables then it just crashed.

i want to whats the problem.

The data is being inserted fine. Can i cause issue in production.

Answer 1

Replace var_dump() with the debug method dump() provided by Doctrine Common .

\Doctrine\Common\Util\Debug::dump($user);

It works for single objects and Doctrine collections and should prevent browser displaying issues you are having.

Answer 2

well formatted :

echo '<pre>';
\Doctrine\Common\Util\Debug::dump($user, $recurciveLevelToDisplay);
echo '</pre>';

Answer 3

简单易行的例子。

var_dump(serialize($Object));

Answer 4

问题在于，在双向关系中，两个实体之间都有一个链接，因此在显示 entity1 时 var_dump 还必须打印 entity2 的所有属性，其中包括 entity1 本身给您一个循环。

Answer 5

Symfony < 2.6

You can use \\Doctrine\\Common\\Util\\Debug::dump($variable, $depth); it displays doctrine output without the proxy information.

Symfony > 2.6

If you are using symfony 2.6 or more, I strongly advice you to use dump() . It shows a well formated and colored output, and you can dynamically expend/hide rows.

Answer 6

The get_object_vars() improve the visualization too.

echo "<pre>";
\Doctrine\Common\Util\Debug::dump(get_object_vars($user));

Answer 7

With Symfony 2.6 you can now just use dump($var) in your controller and {{ dump(var) }} in twig.

Make sure to add this to your AppKernal.php file, in the array('dev', 'test') section.

$bundles[] = new Symfony\Bundle\DebugBundle\DebugBundle();

Answer 8

use dump($user) and you can see perfect result in Symfony Profiler! good luck

Answer 9

只需使用 echo serialize($user);