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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8
use InvalidArgumentException;
9
use Yiisoft\Translator\TranslatorInterface;
10
use Yiisoft\Validator\Exception\RuleHandlerInterfaceNotImplementedException;
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use Yiisoft\Validator\Exception\RuleHandlerNotFoundException;
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use function array_key_exists;
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final class SimpleRuleHandlerContainer implements RuleHandlerResolverInterface
16
{
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private array $instances = [];
18
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657
public function __construct(private TranslatorInterface $translator)
20
{
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}
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115
public function resolve(string $className): RuleHandlerInterface
24
{
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115
if (!class_exists($className)) {
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1
throw new RuleHandlerNotFoundException($className);
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}
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114
if (array_key_exists($className, $this->instances)) {
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35
return $this->instances[$className];
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}
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try {
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101
$classInstance = new $className(translator: $this->translator);
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3
} catch (Error) {
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3
$classInstance = new $className();
37
}
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101
if (!$classInstance instanceof RuleHandlerInterface) {
40
1
throw new RuleHandlerInterfaceNotImplementedException($className);
yiisoft /
validator
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: