php - 使用 php 进行数组搜索

Question

这是我的示例数组代码..如果用户搜索 523465 那么索引应该返回主数组 userdb..我尝试了几种方法但未能获得正确的输出。有人可以帮助我吗？

   <?php
   $userdb = Array (
        (0) => Array (
            (uid) => Array (
                    (0) => Array (
                            '10770' 
                    ),

                    (1) => Array (
                            '523465' 
                    ),

                    (2) => Array (
                            '4042389' 
                    ) 
            ),
            (name) => 'Sandra Shush',
            (url) => 'urlof100' 
    ),

    (1) => Array (
            (uid) => Array (
                    (0) => Array (
                            '102320' 
                    ),

                    (1) => Array (
                            '532465' 
                    ),

                    (2) => Array (
                            '40432389' 
                    ) 
            ),
            (name) => 'Stefanie Mcmohn',
            (pic_square) => 'urlof100' 
    ));
    echo '<pre>';
    print_r(array_column ( $userdb, 'uid' ));
    $key = array_search ( 5432365, array_column ( $userdb, 'uid' ) );

    echo ("The key is: " . $key);

Answer 1

需要几个 foreach 循环。这是我为您编写的功能。第一个参数是您的数组，第二个参数是您要搜索的值。

function searchArrayKey($userdb,$given_value){

foreach ($userdb as $firstkey => $val) {

    foreach ($val as $secondkey => $nestedarray){

        foreach ($nestedarray as $thirdkey => $thirdnestedarray){
            if ($thirdnestedarray['0'] == $given_value){
                return $firstkey;
            }
        }
    }
}

然后用来获取主数组的key

print_r (searchArrayKey($userdb, 523465));