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psalm/docs/running_psalm/issues/DuplicateConstant.md

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# DuplicateConstant
Emitted when a constant is defined twice in a single class or when there's a
clash between a constant and an enum case.
```php
<?php
class C {
public const A = 1;
public const A = 2;
}
```
## Why this is bad
The above code wont compile.