有没有办法用键值PHP的组合过滤数组

Question

how can i filter an array using key value combination.

let array is

a=>1
a=>2
a=>3

b=>4
c=>5

is there any function to search to filter combination of key(a) and value(1)

In php any function there. array_map..or array_seacrh

Answer 1

You could combine array_filter() with array_walk()... the latter does pass both key and value to the callback function