PHP中的OOP-对象数组迭代 - OOP in PHP - object array iteration

OOP in PHP - object array iteration

本文关键字：数组迭代对象 OOP- 中的 PHP | 更新日期: 2023-09-27

我试图在PHP中迭代对象数组，但我无法理解。这是我的代码：

    require_once("databaseConnect.php");
require_once("class/Ticket.php");
function showAll(){
    $sql = "SELECT * FROM Ticket WHERE Status='1'";
    $p = mysql_query($sql);
    while ($row = mysql_fetch_object($p)){ 
        $t = new Ticket($row->IDTicket, $row->IDUser, $row->TotalOdd, $row->PlacedBet, $row->PossibleWin, $row->Status, $row->Won, $row->Time);
        $nizTiketa[] = $t;
    }
    return $nizTiketa;
}
$niz = showAll();
for ($i; $i<count($niz); $i++){
    echo $niz[$i]->getIDTicket()."<br/>";
}

这是舱票：

class Ticket {
private $IDTicket;
private $IDUser;
private $TotalOdd;
private $PlacedBet;
private $PossibleWin;
private $Status;
private $Won;
private $Time;
function Ticket($idTicket, $idUser, $totalOdd, $placedBet, $possibleWin, $status, $won, $time) {
    $this->IDTicket = $idTicket;
    $this->IDUser = $idUser;
    $this->TotalOdd = $totalOdd;
    $this->PlacedBet = $placedBet;
    $this->PossibleWin = $possibleWin;
    $this->Status = $status;
    $this->Won = $won;
    $this->Time = $time;
}
function getIDTicket(){
    return $this->IDTicket;
}
function setIDTicket($idTicket){
    $this->IDTicket = $idTicket;
}

。.

我在非对象上调用成员函数getIDTicket（）时出错

应该怎么做？

为了保持理智，我会在这里做一些事情。。。

正如Joe所提到的，在添加元素之前初始化数组，例如
```
function showAll() {
    $nizTiketa = array();
    // ...
```

将迭代计数器$i初始化为零

for ($i = 0, $count = count($niz); $i < $count; $i++)

或者更简单地说，使用foreach

foreach ($niz as $ticket) {
    echo $ticket->getIDTicket(), "<br/>";
}