Arrow Functions
Arrow functions, introduced with the fn keyword, are a type of closure with a specific syntax. They only accept one expression, and automatically import all the variables from the local context of definition.
Arrow functions may also be marked as static, to prevent this import.
<?php
class Elephpant {
private int $p = 2;
function trumpet() {
$b = 10;
$fn = fn($a) => $a + $b + 2;
$fn = static fn($a) => $a + $b + $this->p;
// $this is not allowed in static arrow function
$fn = static fn($a) => $a + $b + $this->p;
}
}
?>
See Also
- Arrow functions in PHP
- PHP Arrow Functions – Simple, Short, and Effective
- Variable Scope in PHP: Global, Static, and Closures