h5-api/app/Models/ShareUser.php

<?php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class ShareUser extends Model{

    protected $table='share_user';

    public function user(){
        return $this->hasOne(User::class,'id','user_id');
    }

    public function shareuser(){
        return $this->hasOne(User::class,'mobile','phone');
    }
}