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.
Loading history...
17
18
/**
19
* Validates that the value contains certain number of items. Can be applied to arrays or classes implementing
20
* {@see Countable} interface.
21
*/
22
final class CountHandler implements RuleHandlerInterface
23
{
24
use LimitHandlerTrait;
25
26
private FormatterInterface $formatter;
27
28
21
public function __construct(?FormatterInterface $formatter = null)
29
{
30
21
$this->formatter = $formatter ?? new Formatter();
31
}
32
33
20
public function validate(mixed $value, object $rule, ValidationContext $context): Result
34
{
35
20
if (!$rule instanceof Count) {
36
1
throw new UnexpectedRuleException(Count::class, $rule);
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: