Error Identifier: class.duplicateProperty
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Code example #
<?php declare(strict_types = 1);
class Foo
{
public string $name;
public int $name;
}
Why is it reported? #
A property is declared more than once in the same class. PHP does not allow redeclaring properties within a single class definition. This also applies when a property is declared both as a regular property and as a constructor-promoted property.
In the example above, $name is declared twice in the Foo class.
How to fix it #
Remove the duplicate property declaration:
<?php declare(strict_types = 1);
class Foo
{
public string $name;
- public int $name;
}
If using constructor promotion, remove the non-promoted property declaration:
<?php declare(strict_types = 1);
class Foo
{
- public string $name;
-
public function __construct(
public string $name,
) {
}
}
Non-ignorable error #
This error cannot be ignored using @phpstan-ignore or the ignoreErrors configuration. Non-ignorable errors indicate code that would cause a crash or a fatal error at runtime, or a fundamental problem in the analysed code that must be addressed.