PHP获取多维数据的交集与差集

Posted 2020-11-30 gentsir

在项目中经常遇到需要动态编辑特定事物的一组属性，这时就涉及到新选择的值与旧值对比更新，记录在项目中采用的一种方法，主要采用 php array_filter() 函数：

$delete_array = $add_new_array = array();
$array1 = array(
    array(\'user_id\' => 1, \'user_name\' => \'一00一\', \'corp_id\' => 1),
    array(\'user_id\' => 2, \'user_name\' => \'二00二\', \'corp_id\' => 1),
    array(\'user_id\' => 3, \'user_name\' => \'三00三\', \'corp_id\' => 1),
);
$array2 = array(
    array(\'user_id\' => 1, \'user_name\' => \'一00一\'),
    array(\'user_id\' => 2, \'user_name\' => \'二00二\'),
    // array(\'user_id\' => 3, \'user_name\' => \'三00三\'),
    array(\'user_id\' => 4, \'user_name\' => \'四00四\'),
);

$delete_array = array_filter($array1, function ($v, $k) use ($array2) {
    foreach ($array2 as $key => $val) {
        if ($val[\'user_id\'] == $v[\'user_id\']) {
            return false;
        }
    }
    return true;
}, ARRAY_FILTER_USE_BOTH);

$add_new_array = array_filter($array2, function ($v, $k) use ($array1) {
    foreach ($array1 as $key => $val) {
        if ($val[\'user_id\'] == $v[\'user_id\']) {
            return false;
        }
    }
    return true;
}, ARRAY_FILTER_USE_BOTH);

echo \'delete_array:\';
print_r(array_values($delete_array));

echo "\\n", \'add_new_array:\';
print_r(array_values($add_new_array));

效果如下：