Brent • 5/2/2019

Arrow functions in PHP 7.4

This article provides a technical overview of arrow functions (short closures) introduced in PHP 7.4. It explains the syntax using the `fn` keyword, demonstrates practical usage with functions like `array_map`, and covers key details such as type hinting, single-expression limitation, and automatic variable binding from the outer scope without the `use` keyword.

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#functional programming #arrow functions #closures