2019-02-22array_flip()array_flip(array$array):数组说明：交换数组$arr=['name'=>'张三','age'=>18,'gender'=>'man'];print_r(array_flip($arr));//outputArray([ZhangSan]=>name[18]=>age[man]=>gender)array_intersect_assoc()array_intersect_assoc(array$array1,array$array2[,array$...]):arraydescription:数组的交集与索引检查$arr1=['name'=>'ZhangSan','age'=>18,'gender'=>'man'];$arr2=['姓名'=>'张三','age1'=>18,'性别'=>'女',];print_r(array_intersect_assoc($arr1,$arr2));//outputArray([name]=>ZhangSan)array_intersect_key()`array_intersect_key(array$array1,array$array2[,array$...]):array`说明:使用键名计算数组的交集$arr1=['name'=>'ZhangSan','age'=>18,'gender'=>'man'];$arr2=['姓名'=>'张三','age1'=>18,'性别'=>'女',];print_r(array_intersect_key($arr1,$arr2));//你tputArray([name]=>ZhangSan[gender]=>man)array_intersect()array_intersect(array$array1,array$array2[,array$...]):array描述：计算数组的交集$arr1=['name1'=>'张三','年龄'=>18,'性别'=>'男'];$arr2=['name'=>'张三','age1'=>18,'gender'=>'woman',];print_r(array_intersect($arr1,$arr2));//outputArray([name1]=>ZhangSan[age]=>18)array_key_exists()`array_key_exists(mixed$key,array$array):bool`描述：检查数组中是否包含指定的键名/索引$arr1=['name1'=>'张三','年龄'=>18,'性别'=>'男'];print_r(array_key_exists('name1',$arr1));//outputboolean(true);
