Question

我的班级有问题。我写了一个课程项目。当我从这个类创建对象时，创建对象时没有问题，但是更多对象导致使用最后一个对象初始化所有以前的对象。

这是我创建对象的方式：

$a = new Item(1, 111, 123, "Laptop", "NOT HP ProBook 450 G1, E9Y47EA", "kom.", 1, 20500, 25000, 18, 12, 1);

所以，如果我将它打印到屏幕，一切都会好的，我会给出以下内容：

Item: | 00001 | Laptop___________________ NOT HP ProBook 450 G1, E9Y47EA____________________ | Units: kom. Availability: 0001 - 20.500,00 - 25.000,00 || G: 12 months

但是如果我创建另一个Item对象：

$b = new Item(2, 222, 456, "DESKTOP", "blah", "kom.", 2, 41000, 46000, 18, 12, 1);

当回应他们时，我得到：

Item: | 00002 | DESKTOP__________________ blah______________________________________________ | Units: kom. Availability: 0002 - 41.000,00 - 46.000,00 || G: 12 months

Item: | 00002 | DESKTOP__________________ blah______________________________________________ | Units: kom. Availability: 0002 - 41.000,00 - 46.000,00 || G: 12 months

正如您所看到的，看起来它们都是用相同的数据初始化的。

任何人，任何想法？

提前致谢！

require_once("item.interface.php");
require_once("../conf/numberFormat.config.php");

//class item

class Item implements iItem
{
private static $id; //int
private static $cipher; //int
private static $serialNumber; //big int
private static $name; //string
private static $description; //text
private static $unit; //measurment unit
private static $quantity; //int
private static $price; //double
private static $recomendedPrice; //double
private static $vat; //tiny int
private static $guarantee; //tiny int
private static $warehouse; //small int

//formatting
private static $decimalPoint;
private static $decimals;
private static $thousandSeparator;

public function Item($id, $cipher, $serialNumber, $name, $description, $unit,       $quantity, $price, $recomendedPrice,
    $vat, $guarantee, $warehouse)
{
    self::$id = $id;
    self::$cipher = $cipher;
    self::$serialNumber = $serialNumber;
    self::$name = $name;
    self::$description = $description;
    self::$unit = $unit;
    self::$quantity = $quantity;
    self::$price = $price;
    self::$recomendedPrice = $recomendedPrice;
    self::$vat = $vat;
    self::$guarantee = $guarantee;
    global $decimalPoint;
    self::$decimalPoint = $decimalPoint;
    global $decimals;
    self::$decimals = $decimals;
    global $thousandSeparator;
    self::$thousandSeparator = $thousandSeparator;
    self::$warehouse = $warehouse;
}

//set methods
public function setId($id)
{
    self::$id = $id;
}

public function setCipher($cipher)
{
    self::$cipher = $cipher;
}

public function setSerialNumber($serialNumber)
{
    self::$serialNumber = $serialNumber;
}

public function setName($name)
{
    self::$name = $name;
}

public function setDescription($description)
{
    self::$description = $description;
}

public function setUnit($unit)
{
    self::$unit = $unit;
}

public function setQuantity($quantity)
{
    self::$quantity = $quantity;
}

public function setPrice($price)
{
    self::$price = $price;
}

public function setRecomendedPrice($recomendedPrice)
{
    self::$recomendedPrice = $recomendedPrice;
}

public function setVat($vat)
{
    self::$vat = $vat;
}

public function setGuarantee($guarantee)
{
    self::$guarantee = $guarantee;
}

public function setWarehouse($warehouse)
{
    self::$warehouse = $warehouse;
}

//get methods
public function getId()
{
    return self::$id;
}

public function getCipher()
{
    return self::$cipher;
}

public function getSerialNumber()
{
    return self::$serialNumber;
}

public function getName()
{
    return self::$name;
}

public function getDescription()
{
    return self::$description;
}

public function getUnit()
{
    return self::$unit;
}

public function getQuantity()
{
    return self::$quantity;
}

public function getPrice()
{
    return self::$price;
}

public function getRecomendedPrice()
{
    return self::$recomendedPrice;
}

public function getVat()
{
    return self::$vat;
}

public function getGuarantee()
{
    return self::$guarantee;
}

public function getWarehouse()
{
    return self::$warehouse;
}

//other methods
public function toString()
{
    global $ITEM;
    return ucfirst($ITEM).": | " . sprintf("%05d", self::$id) . " | " . STR_PAD(self::$name, 25, "_") .
        " <i>" . STR_PAD(self::$description, 50, "_") . "</i> | Units: ".self::$unit." Availability: " .
        sprintf("%04d", self::$quantity) . " - " . self::formatPrice(self::$price) .
        " - " . self::formatPrice(self::$recomendedPrice) . " || G: " . self::$guarantee .
        " months";
}

public function toHTML()
{
    return false;
}

private function formatPrice($input)
{
    return number_format($input, self::$decimals, self::$decimalPoint, self::$thousandSeparator);
}
}

Answer 1

这是因为您的属性（变量）是静态的。

阅读课堂资产

http://www.php.net/manual/en/language.oop5.properties.php

从PHP中的类创建对象会导致具有相同数据的对象

1 个答案: