and let’s assume the following content of Bar.php:
// Bar.phpnamespaceOtherDir;useSomeDir\Foo;// This now conflicts the class OtherDir\Foo
If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:
PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:
// Bar.phpnamespaceOtherDir;useSomeDir\FooasSomeDirFoo;// There is no conflict anymore.
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6
use LAG\AdminBundle\Field\Field;
7
use Exception;
8
use Symfony\Component\OptionsResolver\OptionsResolver;
9
use Traversable;
10
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/**
12
* Array field.
13
*
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* Note : class can not be called Array by php restriction
15
*/
16
class ArrayField extends Field
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{
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protected $glue;
19
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/**
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* Render field value
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*
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* @param mixed $value
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* @return string
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* @throws Exception
26
*/
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public function render($value)
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{
29
if (!is_array($value) && !($value instanceof Traversable)) {
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throw new Exception('Value should be an array instead of '.gettype($value));
31
}
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if ($value instanceof Collection) {
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$value = $value->toArray();
34
}
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return implode($this->glue, $value);
37
}
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/**
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* Configure options resolver.
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*
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* @param OptionsResolver $resolver
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*
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* @return mixed
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*/
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public function configureOptions(OptionsResolver $resolver)
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: