Medium
What does this example show?
$b = 12;
echo $a ?? $b;
Edit
0
Community EvaluationsNo one has reviewed this question yet, be the first!
4
Is this function signature valid?
```php
<?php
interface Demo
{
public function bar(): ?mixed;
}
```4
Which function signature is valid?3
PHP code that throws a TypeError7
PHP code that throws an error.4
Attributes are metadata that can be added to classes, properties, constants or methods.5
PHP function with named and positional arguments.4
Use the match expression in PHP to print a string.