Hard
What does this code display?
<?php
echo $a?->b() ?? 'test';
Edit
-1
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5
Check if a value is in an array in PHP5
Which function signature is valid?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.