Intermediate
PHP
Q88 / 100
What is PHP's first class callable syntax (PHP 8.1)?
Correct! Well done.
Incorrect.
The correct answer is B) Closure::fromCallable($fn) as a shorthand: $fn = strlen(...) creates a closure from a function
B
Correct Answer
Closure::fromCallable($fn) as a shorthand: $fn = strlen(...) creates a closure from a function
Explanation
$fn = strlen(...) is equivalent to Closure::fromCallable("strlen"). Works for functions, methods, static methods: $fn = $obj->method(...).
Progress
88/100