说明
array_intersect_key ( array
$array1 , array $array2 [, array $... ] ) : arrayarray_intersect_key() 返回一个数组，该数组包含了所有出现在 array1 中并同时出现在所有其它参数数组中的键名的值。无铁芯直线电机
参数
array1-
The array with master keys to check.
array2-
An array to compare keys against.
...-
A variable list of arrays to compare.
返回值
Returns an associative array containing all the entries of array1 which have keys that are present in all arguments.