Medium
What does this example show?
<?php
class Period {
private \DateTimeInterface|null $startDate;
public function __construct(?\DateTimeInterface $startAt)
{
$this->startDate = $startAt;
}
public function getStartDate(): \DateTimeInterface
{
return $this->startDate;
}
}
$period = new Period(new \DateTimeImmutable("2020-11-26"));
$period->__construct();
$dateAsString = $period->getStartDate()?->format('Y');
echo $dateAsString;
Edit
2
Community EvaluationsNo one has reviewed this question yet, be the first!
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.4
Which function signature is valid?3
PHP code that throws a TypeError