【发布时间】：2017-06-20 14:13:50
【问题描述】：
我很想从数据库中列出项目，但是结果一分为二。每条记录显示 2 个结果。目前我在数据库中只有一条记录，但是当我在屏幕上显示它们时，它会重复。我不知道为什么会这样，我试图放置一个计数器，看看循环进行了多少次，结果总是一次。但是结果会显示两次。
代码如下：
<section class="container">
<div class="row">
<?php
if($bidCollection->selectBidsByStatusAndAppId(BidAccount::OPEN_NEW, $id)){
foreach($bidCollection->getBids() as $bid){
$banker->find($bid->getCustomerId());
$counter=0;
?>
<div class='col-xs-12 bg-more-light-gray bidlist'>
<div class="col-xs-12 col-sm-1 col-md-1">
<?php
if(!$uploader->findProfilePicture($banker->data()->_customer_id)){
echo "<img src='image/holder.png ' width='50' height='50' class='img-responsive' />";
}else{
echo "<img src='upload/proPicture/".$uploader->data()->pictureUrl."' width='50' height='50' class='img-responsive'/>";
}
?>
</div>
<div class="col-xs-12 col-sm-8 col-md-8">
<?php
echo '<h2>Agent name :'.$validate->cleanInput($banker->data()->officer_name).'</h2>';
echo '<h3>Institute name : '.$validate->cleanInput($banker->data()->bank_name).' '.++$counter.'</h3>';
if($bid->getApplicationOwnerId() === $customer->data()->_customer_id){
echo "<p>CheckBook: ";
if($bid->getRequestCheckBook()){echo "Yes";}else{echo "No";}
echo "</p>";
echo"<p> Minimum Deposit: AED ".$bid->getMinDeposit()."</p>";
echo"<p> Direct Debit Card: ";
if($bid->getRequestCreditCard()){echo "Yes";}else{echo "No";}
echo "</p>";
echo"<p> Other Fees / Arrangement Fees: AED ".$bid->getFees(). "</p>";
echo"<p> Account Will be ready in: ".$bid->getSetupTime() ."</p>";
}
?>
</div>
<div class="col-xs-12 col-sm-2 col-md-2">
<?php
$datetime = new DateTime($bid->getDatePosted());
$date = $datetime->format('Y-m-d');
$time = $datetime->format('H:i:s');
echo '<h4> Date: '.$date.'<br/>Time: '.$time.'</h4>';
echo"<form method='POST' action='viewBanker.php'>";
echo "<input type='hidden' name='banker' value='".$bid->getCustomerId()."'>";
echo "<input type='submit' class ='btn btn-default' name='submit' value='View Profile'>";
echo "</form>";
echo'<br/>';
if($bid->getApplicationOwnerId() === $customer->data()->_customer_id){
echo"<form method='post' action='acceptAccountBid.php'>";
echo "<input type='hidden' value='".$bid->getCustomerId()."' name ='bankerId'/>";
echo "<input type='hidden' value='".$id."' name ='appid'/>";
echo "<input type='hidden' value='".$bid->getApplicationOwnerId()."' name='ownerId'>";
echo "<input class='btn btn-default' type='submit' value='Accept Offer' name='submit'>";
echo"</form>";
}
?>
</div>
</div>
<?php
}
}
?>
返回值的方法如下：
public function selectBidsByStatusAndAppId($status, $appid)
{
$sql = "SELECT * FROM accountBid WHERE application_id = :appId AND status = :st";
try {
$sth = $this->_db->getConnection()->prepare($sql);
$sth->bindValue(':appId', $appid);
$sth->bindValue(':st', $status);
$sth->execute();
} catch (Exception $e) {
$this->setAlert('danger', 'Information Presentation Error: ' . $e->getMessage());
}
foreach ( $sth->fetchAll(PDO::FETCH_ASSOC) as $data) {
$this->addBid($data);
}
return true;
}
public function addBid($data = null)
{
$bid = new BidAccount($data);
$this->bids[] = $bid;
}
public function getBids()
{
return $this->bids;
}
【问题讨论】：
-
$bidCollection->getBids()返回什么？在`foreach, addecho "getBids():
".print_r($bidCollection->getBids(),true)."
";```之前我们知道您会得到什么。 -
您可以将
$bidCollection->getBids()移到 foreach 之外，并将其值放入变量中，这样它只会被调用一次。 -
getBids() 返回对象数组。它所做的只是返回一个 Bid 对象的集合，然后使用 foreach 提取每个对象并显示它们的内容。
-
这从代码中很明显。但是每次通过 foreach 时都会调用它。另外，除非你回应它，否则你怎么确定它包含什么？
-
print_r 不显示任何内容，但是 var_dump 显示记录两次，但 Mysql 只有一条记录。相同的记录显示在屏幕上，我不明白是什么导致它循环两次。