如何使用字符串中的键获取数组的值

Question

I have an array with some keys and I want to get the array values according to the array keys where the keys are in a string.

Example:

$arr = array(
        "COV" => "Comilla Victorians",
        "RK"  => "Rajshaji Kings"
    );

$str = "COV-RK";

Now I want to show Comilla Victorians VS Rajshaji Kings.

I can do it using some custom looping, But I need some smart coding here and looks your attention. I think there are some ways to make it with array functions that I don't know.

Answer 1

You could do something like:

echo implode(' VS ', array_map(function($v) use ($arr) { return $arr[$v]; }, explode('-', $str)));

So explode the string, map the resulting array, returning the value of the matching key in $arr, then just implode it.