Hard
What will be displayed?
<?php
class User
{
    public string $name = 'Doe';
}
class Article
{
    public ?User $user;
   
}
$article = new Article;
$article->user = new User;
$article?->user?->name = 'Dupont';
echo $article->user->name;
Author: W3D TeamStatus: PublishedQuestion passed 994 times
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7
PHP code that throws an error.5
PHP function with named and positional arguments.4
Attributes are metadata that can be added to classes, properties, constants or methods.4
Is this function signature valid?
```php
<?php
interface Demo
{ 
    public function bar(): ?mixed;
}
```4
Use the match expression in PHP to print a string.5
Check if a value is in an array in PHP5
Which function signature is valid?