HNWelcomeSystemAdminDcat/app/Services/PublicServices.php

<?php


namespace App\Services;


use App\Models\AdmissionNewStudents;

class PublicServices extends BaseServices
{
    /**
     * 返回指定身份证学生新老生身份
     * @param $idcard
     * @return \Illuminate\Database\Eloquent\HigherOrderBuilderProxy|mixed
     */
    public function checkIsNewOldStudent($idcard)
    {
        $count = AdmissionNewStudents::query()->where([
            "idCard" => $idcard
        ])->count();
        //出现两条数据以上时必为老生
        if($count > 1){
            return AdmissionNewStudents::IS_NEW_STUDENT_NO;
        }

        //为一条数据时检测是否为老生
        $studentInfo = AdmissionNewStudents::query()->where([
            "idCard" => $idcard
        ])->first();
        return $studentInfo->is_new_student;
    }
}