【发布时间】：2021-02-18 04:36:29
【问题描述】：
所以我刚开始学习 PDO，还搞不懂这个。
我遇到的问题是循环正确运行一次（似乎至少）所有内容都被添加到正确的数据库中，但是它似乎没有从数组的其余部分获得“dkpAmount”，并且也不向它们添加新的 dkpAmount。
请帮忙。
我的表单如下所示：
<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>
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', $raider);
$stmt->bindValue(':newdkp', $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, 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'] == 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);
$stmt->bindValue(':newdkp', $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['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"));
$hist->execute();
}
}
header("Location: ../index.php?dkp=".$newDKP."");
} else {
header("Location: ../index.php");
}
?>
在我的函数中运行的代码，与其他3个基本相同，但我还是会发布它：
function updateDKP($handler, $raider, $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, $raid, $newDKP, $dkpAmo, $raider) {
$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"));
$hist->execute();
}
我知道这变成了页面上的大量代码。但不希望有任何遗漏让您能够提供帮助^^
*编辑： 还想提一下，它确实使用所有正确的名称添加到 dkp_history，$dkpInc 在那里也是正确的 - 它只是没有获取 $dkpAmount 或更新 $dkpAmount
cmets 中的解决方案 -> 试图描述性。
【问题讨论】：
-
为什么您认为这个问题甚至与 PDO 有关？ 在调用任何数据库交互之前，您是否确保所有值都已正确设置？
-
好吧，至少我可以发现一个问题，$dkpAmount 显然是一个数组，因此按原样插入 int 是没有意义的。但是，Stack Overflow 并不是“查看我的代码并使其工作”的服务。您不仅应该编写一些代码墙，还应该验证它是否有效。然后提出一个具体的问题。
-
@YourCommonSense - 你是对的，我很抱歉。就这样坐了一晚上，真的不知道如何正确地问这个问题。
-
你不应该一次写这么多的代码。您必须分小部分编写并强制验证每个部分，然后再转到另一个部分。在每次插入查询之前，您必须检查要插入的每个值。
-
你说循环运行正确，但是哪个？你有4个不同的循环，你的问题太模糊了，应该更加集中，用错误的必要代码编辑问题，但在此之前你应该首先检查你的变量包含什么。