如何解决foreach正确运行一次正确
所以我刚刚开始学习PDO，无法弄清楚这一点。
我遇到的问题是，循环一次正确运行（似乎至少）所有内容都添加到了正确的数据库中，但是随后似乎没有从数组的其余部分获取“ dkpAmount”，并且也不会向其中添加新的dkpAmount。
请帮助。
我的表单如下：
<form class="upd-dkp" method="POST" action="inc/update-dkp.inc.PHP">
<textarea placeholder="One,Two,Three" id="characters" type="text" class="validate" name="characters"></textarea>
<input placeholder="10" id="defeated" type="text" class="validate" name="defeated">
<input placeholder="2" id="wipes" type="text" class="validate" name="wipes">
<select name="raid">
<option value="1">Molten Core</option>
<option value="2">Blackwing Lair</option>
<option value="3">Ahn'Qiraj</option>
<option value="4" disabled>Naxxramas</option>
</select>
<button class="btn waves-effect waves-light" type="submit" name="submit">Update</button>
</form>
和我的update-dkp.inc.PHP看起来像这样：
<?PHP
include 'dbh.PHP';
$charname = $newdkp = $dkpAmo = '';
if(isset($_POST['submit'])){
require_once 'functions.inc.PHP';
$raiders = explode(',',trim($_POST['characters']));
$defeated = $_POST['defeated'];
$wipes = $_POST['wipes'];
if($_POST['raid'] == 1) {
foreach($raiders as $raider) {
$newDKP = round((5 * $defeated) - (6 * $wipes));
$raid = 'Molten Core';
$stmt = $handler->prepare('UPDATE userchars SET dkpAmount = dkpAmount + :newdkp WHERE charName = :charname');
$stmt->bindValue(':charname',$raider);
$stmt->bindValue(':newdkp',$newDKP);
$stmt->execute();
// adding to history db
$dkpAmount = $handler->prepare('SELECT dkpAmount from userchars WHERE charName = :charname');
$dkpAmount->bindValue(':charname',$raider);
$dkpAmount->execute();
$dkpAmount = $dkpAmount->fetchAll();
$dkpAmo = $dkpAmount;
$hist = $handler->prepare('INSERT INTO dkp_history(raidName,dkpInc,dkpAmo,charname,histdate) VALUES(:raid,:dkpInc,:dkpAmo,:charname,:histdate)');
$hist->bindValue(':raid',$raid);
$hist->bindValue(':dkpInc',$newDKP);
$hist->bindValue(':dkpAmo',$dkpAmo);
$hist->bindValue(':charname',$raider);
$hist->bindValue(':histdate',date("Y-m-d H:i:s"));
$hist->execute();
}
}
if($_POST['raid'] == 2) {
foreach($raiders as $raider) {
$newDKP = round((5 * $defeated) - (6 * $wipes) + 35);
$raid = 'Blackwing Lair';
updateDKP($handler,$raider,$newDKP);
getCurrentDKP($handler,$raider);
insertHistory($handler,$raid,$newDKP,$dkpAmo,$raider);
}
}
if($_POST['raid'] == 3) {
foreach($raiders as $raider) {
$newDKP = (5 * $defeated) - (6 * $wipes) + 55;
$raid = 'Ahn\'Qiraj';
$stmt = $handler->prepare('UPDATE userchars SET dkpAmount = dkpAmount + :newdkp WHERE charName = :charname');
$stmt->bindValue(':charname',$newDKP);
$stmt->execute();
// adding to history db
$dkpAmount = $handler->prepare('SELECT dkpAmount from userchars WHERE charName = :name');
$dkpAmount->bindValue(':name',$raider);
$dkpAmount->execute();
$dkpAmount = $dkpAmount->fetch(PDO::FETCH_ASSOC);
$dkpAmo = $dkpAmount;
$hist = $handler->prepare('INSERT INTO dkp_history(raidName,date("Y-m-d H:i:s"));
$hist->execute();
}
}
if($_POST['raid'] == 4) {
foreach($raiders as $raider) {
$newDKP = (5 * $defeated) - (6 * $wipes) + 75;
$raid = 'Naxxramas';
$stmt = $handler->prepare('UPDATE userchars SET dkpAmount = dkpAmount + :newdkp WHERE charName = :charname');
$stmt->bindValue(':charname',$raider);
$dkpAmount->execute();
$dkpAmount = $dkpAmount->fetch(PDO::FETCH_ASSOC);
$dkpAmo = $dkpAmount['dkpAmount'];
$hist = $handler->prepare('INSERT INTO dkp_history(raidName,date("Y-m-d H:i:s"));
$hist->execute();
}
}
header("Location: ../index.PHP?dkp=".$newDKP."");
} else {
header("Location: ../index.PHP");
}
?>
我的函数中运行的代码与其他3个代码基本相同，但我还是会发布它：
function updateDKP($handler,$newDKP) {
$stmt = $handler->prepare('UPDATE userchars SET dkpAmount = dkpAmount + :newdkp WHERE charName = :charname');
$stmt->bindValue(':charname',$raider);
$stmt->bindValue(':newdkp',$newDKP);
$stmt->execute();
}
function getCurrentDKP($handler,$raider) {
$dkpAmount;
$dkpAmo;
$dkpAmount = $handler->prepare('SELECT dkpAmount FROM userchars WHERE charName = :charname');
$dkpAmount->bindValue(':charname',$raider);
$dkpAmount->execute();
$dkpAmount = $dkpAmount->fetch(PDO::FETCH_ASSOC);
$dkpAmo = $dkpAmount['dkpAmount'];
return $dkpAmo;
}
function insertHistory($handler,$raider) {
$hist = $handler->prepare('INSERT INTO dkp_history(raidName,:histdate)');
$hist->bindValue(':raid',$raid);
$hist->bindValue(':dkpInc',$newDKP);
$hist->bindValue(':dkpAmo',$dkpAmo);
$hist->bindValue(':charname',$raider);
$hist->bindValue(':histdate',date("Y-m-d H:i:s"));
$hist->execute();
}
*编辑： 还要提及的是，它确实以所有正确的名称添加到dkp_history中，$ dkpInc在那里也是正确的-它只是不抓住$ dkpAmount或更新$ dkpAmount
解决方法
解决方案：
因此，解决方案易于实施，但对我而言却很难找到。在我的两次尝试中都使用$ _POST ['raid'] = 2。
解决方案1。 该数组在每行中除第一行外都有空格，这就是为什么第一个foreach（）顺利通过的原因。为了解决这个问题，我尝试了一些操作，例如trim＆然后爆炸，但似乎并没有消除空格。我最终要做的是：
$raiderx = urlencode($_POST['characters']);
$raiders = str_replace("+","",$raiderx);
$raiders = urldecode($raiders);
$raiders = explode(',',$raiders);
urlencode（）-将空格转换为“ +”，因此可以毫无问题地进入url，然后从那里我将+替换为空。然后，我使用explode（）再次将其放入数组，并且空格不再存在。
解决方案2.运行该功能时：
getCurrentDKP($handler,$raider);
我以前忘记将其设置为变量。所以我做到了，它是固定的。
$dkpAmo = getCurrentDKP($handler,$raider);
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