helps.php

<?php
/*
 * 遍历数组中某个字段的值 作为 键   返回新数组
 */
function arrayChangeKeyByField($list, $searchKey)
{
    $arr = [];
    if (!$searchKey) {
        return $list;
    }
    foreach ($list as $k => $v) {
        if (isset($v[$searchKey])) {
            $arr[$v[$searchKey]] = $v;
        }
    }
    return $arr ? $arr : $list;
}