array_intersect_key:根据键名计算数组的交集

arrayarray_intersect_key(array$array1,array$array2[,array$...]) 返回一个数组:该数组的键在每一个数组都存在 $arr1 = ['a'='abc','b'='bbb','c'='cbd'];$arr2 = ['a'='ccc','c'='aaa','e'='eee'];$arr = array_intersect_key($arr1, $arr2);echo 'pre';p

array array_intersect_key ( array $array1 , array $array2 [, array $ ... ] )
返回一个数组:该数组的键在每一个数组都存在

$arr1 = ['a'=>'abc','b'=>'bbb','c'=>'cbd'];
$arr2 = ['a'=>'ccc','c'=>'aaa','e'=>'eee'];
$arr = array_intersect_key($arr1, $arr2);

echo '
';
print_r($arr);

result:
Array
(
    [a] => abc
    [c] => cbd
)