php性能优化进阶不要在for循环中操作DB

<?php
namespace App\Render;
.
.
.
class CommonRender extends BaseRender
{
    public static function renderUserinfo($data, $hobbyInfo = [],$professionInfo = [])
    {
        $hobbyInfo = !empty($hobbyInfo) ? $hobbyInfo : HobbyInfo::getAllInfo();
        //特殊处理，因为职业用户可以自定义 数字一直增长 不全量查数据；$professionInfo为空时不是批量查询，只查单条记录
        $professionInfo = !empty($professionInfo) ? $professionInfo : (isset($data['profession']) ? ProfessionInfo::getByIds($data['profession']) : []);
        if (!is_array($data)) {
            return [];
        }
        $ret = [
            .
            .
            .
//优化之前
//          'hobby' => !isset($data['hobby']) ? [] : HobbyInfo::getByIds($data['hobby']),
//          'profession' => !isset($data['profession']) ? [] : ProfessionInfo::getByIds($data['profession']),
//优化之后
            'hobby' => !isset($data['hobby']) ? [] : self::_renderHobby($data['hobby'], $hobbyInfo),
            'profession' => !isset($data['profession']) ? [] : self::_renderProfession($data['profession'], $professionInfo),
            .
            .
            .
        return $ret;
    }
}

protected static function _renderProfession($userProfession, $professionInfo)
{
    $ret = [];
    if ($userProfession) {
        $userProfessionIds = explode(',', $userProfession);
        foreach ($userProfessionIds as $key => $userProfessionId) {
            if (isset($professionInfo[$userProfessionId])) {
                $ret[$key] = $professionInfo[$userProfessionId];
            }
        }
    }
    return $ret;
}

public static function getBatchUserIntro($userid, $userList)
{
    $retData = [];
    if (empty($userList)) {
        return $retData;
    }
    .
    .
    .
    $hobbyInfo = HobbyInfo::getAllInfo();
    //按需批量查职业，不全量查询职业
    $professionIds = array_column($batchUserInfo, 'profession');
    $professionIds = implode(',', $professionIds);
    $professionIds = array_unique(explode(',', $professionIds));
    $professionInfo = ProfessionInfo::batchGetByIds($professionIds);
    foreach ($batchUserInfo as $item) {
        $retData[$item['userid']] = CommonRender::renderUserinfo($item, $hobbyInfo, $professionInfo, $expectInfo);
    }
    return $retData;
}

public static function batchGetByIds($ids = [])
{
    //兼容职业为空的情况
    foreach ($ids as $key => $id) {
        if (empty($id)) {
            unset($ids[$key]);
        }
    }
    if (empty($ids)) {
        return [];
    }
    return self::query()->selectRaw('id,name,pid')
        ->whereIn('id', $ids)
        ->get()
        ->keyBy('id')
        ->toArray();
}