13 questions for “Closures & Anonymous Functions”

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13 questions in 1 technology

#	Question	Technology	Topic	Level
1	What are arrow functions introduced in PHP 7.4, and how do they simplify writing short closures compared to traditional anonymous functions? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Intermediate
2	What is an anonymous function in PHP, and how does it differ from a regular named function? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Beginner
3	What is the use keyword in a PHP closure, and why is it needed to access outside variables from within an anonymous function? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Beginner
4	How can closures be used to implement simple dependency injection or callback based customization within a class? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Intermediate
5	How do first class callable syntax and higher order functions in modern PHP support building flexible, composable, functional style code? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Advanced
6	How does passing a variable by reference into a closure's use clause differ from the default pass by value behavior? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Intermediate
7	How does binding a closure to a specific object or class using bindTo or Closure::bind allow it to access private properties and methods it otherwise could not? PHP › Closures & Anonymous Functions	PHP	Closures & Anonymous Functions	Advanced
8	How do you define and call a basic function in PHP, and what are function parameters and return values? PHP › Functions & Scope	PHP	Functions & Scope	Beginner
9	What is variable scope in PHP, and why can't a function normally access a variable defined outside of it? PHP › Functions & Scope	PHP	Functions & Scope	Beginner
10	What is ReactPHP and how does its event loop enable non blocking, asynchronous behavior in standard PHP? PHP › Asynchronous PHP (ReactPHP & Swoole)	PHP	Asynchronous PHP (ReactPHP & Swoole)	Beginner

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