短代码获取数组，该数组从php中的一个数组获取键并从另一个数组获取值

Question

Is there any neat way to make an array that its keys comes from the first array and its values come from the second, and discarding any item in the second that does not have any corresponding key in the first? for example if:

 $keys = array('key1'=>1,'key2'=>2,'key3'=>3);
 $vals = array('key1'=>'val1', 'key4'=>'val4');

the result would be:

 $result=array('key1'=>'val1' , 'key2'=>2 , 'key3'=>3);

Currently, I am using these two lines:

 $result = array_intersect_key($vals, $keys);
 $result = array_merge($vals, $result);

Is there any cleaner way to do that?

Answer 1

You're doing it correctly as is. To reduce a line you could do away with reassigning the $result variable like

 $result = array_merge($vals, array_intersect_key($vals, $keys));