PHP Compiler Testing
Filter Strings from Array

Create a function that takes a list of strings and integers, and filters out the list so that it returns a list of integers only.

Examples

filter_list([1, 2, 3, "a", "b", 4]) ➞ [1, 2, 3, 4]

 

filter_list(["A", 0, "Edabit", 1729, "Python", "1729"]) ➞ [0, 1729]

 

filter_list(["Nothing", "here"]) ➞ []