Php查询无法从get？id加载查询

我正试图抓住所有的投标金额，已提交并通过产品ID，我似乎无法让它工作谁能告诉我我做错了请

我已经将视图类放置在DB类上，以便它输出和查询

我要做的是从bids表中抓取所有出价并输出到屏幕上 通过传递用户单击产品的链接

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我想你刚刚从投标表中获取了一条记录，而且allbids函数似乎不正确，请尝试下面的代码，让我知道是否为你工作

<?php

class ProductView extends View {
protected function displayContent() {
    if(isset($_GET['id'])) {
    //get the record from database
        $this -> product = $this -> model -> getProductByID($_GET['id']);
        $this -> bidprice = $this -> model ->allbids($_GET['id']);
            if(is_array($this -> product)) {
                $html = $this -> displayProduct();
                } else {

                   $html .= '<p>Sorry, that product is not available</p>';

                }            
                    } else {
                     header("Location:index.php?page=error");

    }
        return $html;
}


private function displayProduct() {

        $html = '<div id="product">';
        $html .= '<img src="images/products/'.$this -> product['productImage'].'" alt="'.$this -> product['productName'].'" />';
        $html .= '<h3>'.$this -> product['productName'].'</h3>';
        $html .= '<p><strong>$'.$this -> product['productPrice'].'.00'.'</strong></p>';
        //.sprintf("%.2f" result was breaking the query placed .00. to give it currency rate.
        $html .= '<p>'.$this -> product['productDescription'].'</p>';
        /* here you have to place a for each loop that will fetch all the info for bid*/
        foreach($this -> bidprice as $val)
        {
            $html .= '<p> Bid Price'.$val['bidPrice'].'</p>';
            $html .= '<p> Bidded By'.$val['userName'].'</p>';
        }

        $html .= '</div>';
        $html .='<div id="space">';
        $html .='</div>';

    return $html;        
}    

---

您好，在DB查询类中，您将返回一个未设置的变量。（$bidPrice）。我猜应该是$bid。@JacksonYong:你知道为什么这对你不起作用吗？因为您只从bid表中获取一个bid，而您必须获取所有bid，并通过执行循环显示功能来显示。虽然如果您不清楚，请告诉我，我将通过编辑您的代码文件提供帮助。是的，对不起，我仍然不清楚：（我是php新手，你能教我吗me@JacksonYong：当然，我如何检查您的代码以及如何教您？因为我没有放置每个循环？@JacksonYong:是的，因为缺少循环，所以存在该问题，如果您需要，我可以解决此问题，与我共享您的文件和数据库结构。

public function allbids($id){
        $qry = "SELECT userName , bidPrice as bidPrice FROM bids , users WHERE productID = $id";
        $rs = $this -> db -> query($qry);
        if($rs) {
            if($rs ->num_rows > 0) {
                $bid = $rs -> fetch_assoc();

            }
            return $bidPrice;

        } else {
            echo 'Error Executing Query';   
        }
        return false;
    }

<?php

class ProductView extends View {
protected function displayContent() {
    if(isset($_GET['id'])) {
    //get the record from database
        $this -> product = $this -> model -> getProductByID($_GET['id']);
        $this -> bidprice = $this -> model ->allbids($_GET['id']);
            if(is_array($this -> product)) {
                $html = $this -> displayProduct();
                } else {

                   $html .= '<p>Sorry, that product is not available</p>';

                }            
                    } else {
                     header("Location:index.php?page=error");

    }
        return $html;
}


private function displayProduct() {

        $html = '<div id="product">';
        $html .= '<img src="images/products/'.$this -> product['productImage'].'" alt="'.$this -> product['productName'].'" />';
        $html .= '<h3>'.$this -> product['productName'].'</h3>';
        $html .= '<p><strong>$'.$this -> product['productPrice'].'.00'.'</strong></p>';
        //.sprintf("%.2f" result was breaking the query placed .00. to give it currency rate.
        $html .= '<p>'.$this -> product['productDescription'].'</p>';
        /* here you have to place a for each loop that will fetch all the info for bid*/
        foreach($this -> bidprice as $val)
        {
            $html .= '<p> Bid Price'.$val['bidPrice'].'</p>';
            $html .= '<p> Bidded By'.$val['userName'].'</p>';
        }

        $html .= '</div>';
        $html .='<div id="space">';
        $html .='</div>';

    return $html;        
}    

// your db function
public function allbids($id){
    $qry = "SELECT userName , bidPrice as bidPrice FROM bids , users WHERE productID = $id";
    $rs = $this -> db -> query($qry);
    if($rs) {
        if($rs ->num_rows > 0) {
            while($row = mysql_fetch_assoc($rs))
            {
                $bid[]= $row;
            }

        }
        return $bid[];

    } else {
        echo 'Error Executing Query';   
    }
    return false;
}
?>