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psalm/docs/running_psalm/issues/PossiblyInvalidPropertyFetch.md

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# PossiblyInvalidPropertyFetch
Emitted when trying to fetch a property on a value that may not be an object or may be an object that does not have the desired property.
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```php
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<?php
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class A {
/** @var ?string */
public $bar;
}
/** @return A|int */
function foo() {
return rand(0, 1) ? new A : 5;
}
$a = foo();
echo $a->bar;
```