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psalm/docs/running_psalm/issues/RedundantPropertyInitializationCheck.md

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# RedundantPropertyInitializationCheck
Unitialized properties are hard to statically analyze. To prevent mistakes, Psalm will enforce that all properties should be initialized.
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It does that through [PropertyNotSetInConstructor](./PropertyNotSetInConstructor.md) and [MissingConstructor](./MissingConstructor.md).
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Psalm will then assume every property in the codebase is initialized.
Doing that allows it to report missing initializations as well as this issue.
This issue is emitted when checking `isset()` on a non-nullable property. Because every property is assumed to be initialized, this check is redundant
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If your project relies on having uninitialized properties, it is advised to suppress this issue, as well as [PropertyNotSetInConstructor](./PropertyNotSetInConstructor.md) and [MissingConstructor](./MissingConstructor.md).
```php
<?php
class A {
public string $bar;
public function getBar() : string {
if (isset($this->bar)) {
return $this->bar;
}
return "hello";
}
}
```