代码之家 › 专栏 › 技术社区 › Lemon Kazi

从父数组获取重复值,而不是从父数组获取重复值

array-filter unique filter arrays php

-1

Lemon Kazi · 技术社区 · 6 年前

公共阵列

$a = array([0]=> Array
    (
        [id] => 22429
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),[1]=> Array
    (
        [id] => 22430
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),[2]=> => Array
    (
        [id] => 22431
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),[3] => Array
    (
        [id] => 22432
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ));

$b = array("0"=> Array
    (
        [id] => 22428
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),"1" => Array
    (
        [id] => 22430
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),[2]=> Array
    (
        [id] => 22431
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ),[3] => Array
    (
        [id] => 22432
        [user_id] => 0
        [shop_id] => 78
        [start_date] =>
        [fn_point] => 0
    ));;

唯一数组的输出将是

$c = array(
        [0]=> Array
        (
            [id] => 22429
            [user_id] => 0
            [shop_id] => 78
            [start_date] =>
            [fn_point] => 0
        )
    );

公共数组的输出将是

$u = array(
        [0]=> Array
        (
            [id] => 22430
            [user_id] => 0
            [shop_id] => 78
            [start_date] =>
            [fn_point] => 0
        ),[1]=> Array
        (
            [id] => 22431
            [user_id] => 0
            [shop_id] => 78
            [start_date] =>
            [fn_point] => 0
        ),[2]=> Array
        (
            [id] => 22432
            [user_id] => 0
            [shop_id] => 78
            [start_date] =>
            [fn_point] => 0
        )
    );

3 回复 | 直到 6 年前

Death-is-the-real-truth 6 年前

array_intersect()

$c = array_values(array_intersect($a,$b)); //array_values() used for re-indexing final array
print_r($c);

输出:- https://eval.in/1055829

使用 array_diff()

$c = array_values(array_diff($a,$b));//array_values() used for re-indexing final array
print_r($c);

https://eval.in/1055830

参考文献:-

array_values()

为您编辑的问题 应用 foreach() 随着 in_array() 和 array_column()

$final_array = [];

foreach($a as $key=>$val){
  if(in_array($val['id'],array_column($b,'id'))){
    $final_array[] = $val;
  }

}

print_r($final_array); // common values array

输出:- https://eval.in/1055838

$final_array = [];

foreach($a as $key=>$val){
  if(!in_array($val['id'],array_column($b,'id'))){
    $final_array[] = $val;
  }

}

print_r($final_array); // non common value array

输出:- https://eval.in/1055839

Nomad Webcode 6 年前

对于您的常用阵列:

array_intersect($a, $b);

array_unique(array_merge($a, $b), SORT_REGULAR);

Andreas 6 年前

Array_intersect 和 array_diff

$a = array('1','2','3','4');
$b = array('4','5','6','7');

$c = array_intersect($a, $b);
var_dump($c); //4

$d = array_diff($a,$b);
var_dump($d); //1,2,3

https://3v4l.org/Ut8JW