erp_yzx/app/common.php

<?php
// 应用公共文件

/**
 * @param bool $bool
 * @param $message
 * @param int $code
 * @throws \app\exception\BaseException
 */
function predicate(bool $bool, $message, $code = 1012) {
    if (!$bool) {
        throw new \app\exception\BaseException($message, $code);
    }
}

/**
 * 格式化字符串
 * @param $value
 * @param null $def
 * @return null
 */
function format_string($value, $def = null) {
    return $value != null && strlen(strval($value)) > 0 ? $value : $def;
}

/**
 * @param $array
 * @param $id
 * @return array 树状Menu
 */
function recursion($array, $id = 0)
{
    $resArray = [];
    foreach ($array as $key => $value)
    {
        if ($value['pid'] == $id)
        {
            $resArray[$key] = $array[$key];
            $resArray[$key]['children'] = recursion($array, $value['id']);
        }
    }
    return array_merge($resArray);
}

function traverse(array $array, $id = 0) {
    $resArray = [];
    $queues = $key = array_search($id,array_column($array,'id'));
    return $queues;


//    while ()



}

function seek($array, $id) {
    $return = [];
    foreach ($array as $item) {
        if($item['pid'] == $id)
            array_push($return, $item);
    }
    return $return;
}