面向对象的PHP - 对象数组迭代

Question

我想遍历PHP中的对象数组，但我无法弄清楚。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/>"; 
} 

，这是类票：

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; 
} 

。 。 。

我一个非对象遇到错误调用一个成员函数getIDTicket（）

应该怎样做呢？

Answer 1

夫妇的事情，我想在这里做了理智......

1. 正如乔所说，你的初始化数组添加元素之前，如

   function showAll() { 
       $nizTiketa = array(); 
       // ... 
   

2. 无论您初始化迭代计数器$i为零

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

   或更简单地使用foreach

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