PHP中的数组对象 [英] Array Object In Php

问题描述

我想将学生对象存储到数组中.我尝试使用下面的代码.但它始终显示数组计数为0

i want to store Student Object to array. and i try to do with below code. but it always show array count as 0

class Student
{
    $StudID = 0;
    $Name = null;
}
class Students
{
   static private $StudentData = array();
   static public function AddNewStudent($id,$name)
   {
    echo("AuctionID :".$AuctionID."<br/>");
        try{
            $objstd = new Student();
            $objstd->StuID = $id;
            $objstd->Name = &name;
            array_push($StudentData, $objstd);
        }
        catch (Exception $e)
       {
            echo("Error".$e->getMessage());
       }
    }
    static public function TotalStudent()
    {
        return count($StudentData);
    }
}


Students::AddNewStudent(1,"name");
Students::AddNewStudent(2,"name2");
Students::AddNewStudent(3,"name3");
echo('Total auction running : '.Students::TotalStudent().'<br/>');

当我尝试显示数组计数时，它显示为0.我想将所有学生数据存储在静态列表中或之后，当我想查看列表之后，我只能从静态类中获取列表...

when i try to show array count it shows 0. i want to store all student data in static list or then after when ever i want to see the list i get the list from static class only...

推荐答案

因为您正在创建一个新数组，而不是引用您声明的数组.使用 self 关键字引用您的静态对象属性:

Because you're creating a new array instead of referencing the one you declared. Use the self keyword to reference your static object property:

class Students
{
   static private $StudentData = array();
   static public function AddNewStudent($id,$name)
   {
    echo("AuctionID :".$AuctionID."<br/>");
        try{
            $objstd = new Student();
            $objstd->StuID = $id;
            $objstd->Name = &name;
            array_push(self::$StudentData, $objstd);
        }
        catch (Exception $e)
       {
            echo("Error".$e->getMessage());
       }
    }
    static public function TotalStudent()
    {
        return count(self::$StudentData);
    }
}

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