mirror of
https://github.com/alrayyes/wiki.git
synced 2024-11-22 03:26:22 +00:00
38 lines
603 B
Markdown
38 lines
603 B
Markdown
---
|
|
date: 2020-11-10
|
|
id: d07536b9-8d42-4b60-92a5-0348acb0a3db
|
|
title: PHP nullsafe operator
|
|
---
|
|
|
|
# Description
|
|
|
|
Introduced in [PHP 8.0](20201109133834-php_8_0), nullsafe operators[^1]
|
|
enable you to safely use methods that may return `null`.
|
|
|
|
# Syntax
|
|
|
|
``` php
|
|
class bar
|
|
{
|
|
public function excellent(): string
|
|
{
|
|
return "excellent";
|
|
}
|
|
}
|
|
|
|
class foo
|
|
{
|
|
public function getBarOrNull(): ?bar
|
|
{
|
|
return rand(0, 1) === 1 ? new bar() : null;
|
|
}
|
|
}
|
|
|
|
$foo = new foo();
|
|
|
|
echo $foo->getBarOrNull()?->excellent();
|
|
```
|
|
|
|
# Footnotes
|
|
|
|
[^1]: <https://wiki.php.net/rfc/nullsafe_operator>
|