我已经花了几个小时摆弄这个并且无法弄清楚为什么$_GET陈述正确执行，但$_POST陈述不是。
如果$ stock以dB为单位，则在表单中显示值，如果表单已提交，请提交UPDATE这些值，IF $stock不以dB为单位且表单已提交INSERT into table 。 $_POST语句似乎都不起作用，但没有丢失任何错误，只需在按下提交按钮时重定向回同一页面。
include_once ('../helper_content/sql_Connect.php');
$error = array();
$KBB_Low = "";
$KBB_High = "";
$KBB_Fair = "";
$KBB_Retail = "";
$KBB_URL = "";
$TrueCar_Great = "";
$TrueCar_Average = "";
$TrueCar_Above = "";
$TrueCar_URL = "";
$NADA_Trade = "";
$NADA_Loan = "";
$NADA_Retail = "";
# Was the form submitted via POST?
if(isset($_POST['Submit'])) {
# Yes
# Is this a new stock item?
if(empty($_POST['stock'])) {
# Yes - insert
$kbb_low = filter_var($_POST['kbb_low'], FILTER_SANITIZE_STRING);
$kbb_high = filter_var($_POST['kbb_high'], FILTER_SANITIZE_STRING);
$kbb_fair = filter_var($_POST['kbb_fair'], FILTER_SANITIZE_STRING);
$kbb_retail = filter_var($_POST['kbb_retail'], FILTER_SANITIZE_STRING);
$kbb_url = filter_var($_POST['kbb_url'], FILTER_SANITIZE_STRING);
$truecar_great = filter_var($_POST['truecar_great'], FILTER_SANITIZE_STRING);
$truecar_average = filter_var($_POST['truecar_average'], FILTER_SANITIZE_STRING);
$truecar_above = filter_var($_POST['truecar_above'], FILTER_SANITIZE_STRING);
$truecar_url = filter_var($_POST['truecar_url'], FILTER_SANITIZE_STRING);
$nada_trade = filter_var($_POST['nada_trade'], FILTER_SANITIZE_STRING);
$nada_loan = filter_var($_POST['nada_loan'], FILTER_SANITIZE_STRING);
$nada_retail = filter_var($_POST['nada_retail'], FILTER_SANITIZE_STRING);
if ($stmt = $conn->prepare("INSERT INTO `Inventory_Valuations` (`stock`,
`kbb_low`, `kbb_high`, `kbb_fair`, `kbb_retail`, `kbb_url`,
`truecar_great`, `truecar_average`, `truecar_above`, `truecar_url`,
`nada_trade`, `nada_loan`, `nada_retail`
) VALUES (?,?,?,?,?,?)")) {
$stmt->bind_param('iiiisiiisiii', $stock,
$kbb_low, $kbb_high, $kbb_fair, $kbb_retail, $kbb_url,
$truecar_great, $truecar_average, $truecar_above, $truecar_url,
$nada_trade, $nada_loan, $nada_retail
);
if ($stmt->execute()) {
$stmt->close();
header('Location: ./?inserted=true');
exit();
} else {
$error[] = "Error adding: " . $stmt->error;
$stmt->close();
}
}
} else {
# No - update
$stock = $_POST['stock'];
$kbb_low = $_POST['kbb_low'];
$kbb_high = $_POST['kbb_high'];
$kbb_fair = $_POST['kbb_fair'];
$kbb_retail = $_POST['kbb_retail'];
$kbb_url = $_POST['kbb_url'];
$truecar_great = $_POST['truecar_great'];
$truecar_average = $_POST['truecar_average'];
$truecar_above = $_POST['truecar_above'];
$truecar_url = $_POST['truecar_url'];
$nada_trade = $_POST['nada_trade'];
$nada_loan = $_POST['nada_loan'];
$nada_retail = $_POST['nada_retail'];
/*... get variables from the $_POST array */
if ($stmt = $conn->prepare("UPDATE `Inventory_Valuations` SET
kbb_low=?, kbb_high=?, kbb_fair=?, kbb_retail=?, kbb_url=?,
truecar_great=?, truecar_average=?, truecar_above=?, truecar_url=?,
nada_trade=?, nada_loan=?, nada_retail=?
WHERE stock=?")) {
$stmt->bind_param('iiiisiiisiii',
$kbb_low, $kbb_high, $kbb_fair, $kbb_retail, $kbb_url,
$truecar_great, $truecar_average, $truecar_above, $truecar_url,
$nada_trade, $nada_loan, $nada_retail,
$stock);
if ($stmt->execute()) {
$stmt->close();
header('Location: ./?updated=true');
exit();
}
else {
$error[] = "Error updating: " . $stmt->error;
$stmt->close();
}
}
}
}
else {
# No - assume a GET
$status = 'Active';
$stock = $_GET['stock'];
$cat = $_GET['cat'];
if(isset($_GET['updated'])) {
$message = "Record updated";
}
else if(isset($_GET['inserted'])) {
$message = "Record added into database";
}
if($stock != "") {
# Load the item?
$query = "SELECT * FROM `Inventory_Valuations` WHERE stock=?";
$stmt = $conn->prepare($query);
$stmt->bind_param('i', $stock);
if($stmt->execute()) {
$result = $stmt->get_result();
if($result) {
$row = $result->fetch_assoc();
$KBB_Low = $row['kbb_low'];
$KBB_High = $row['kbb_high'];
$KBB_Fair = $row['kbb_fair'];
$KBB_Retail = $row['kbb_retail'];
$KBB_URL = $row['kbb_url'];
$TrueCar_Great = $row['truecar_great'];
$TrueCar_Average = $row['truecar_average'];
$TrueCar_Above = $row['truecar_above'];
$TrueCar_URL = $row['truecar_url'];
$NADA_Trade = $row['nada_trade'];
$NADA_Loan = $row['nada_loan'];
$NADA_Retail = $row['nada_retail'];
}
}
$stmt->close();
}
}
?>
<?php if(isset($message)) : ?>
<div class="alert alert-success">
<?= $message ?>
</div>
<?php endif; ?>
<?php if(isset($error)) : ?>
<div class="alert alert-danger">
<ul>
<?php foreach($error as $err): ?>
<li><?= $err ?></li>
<?php endforeach; ?>
</ul>
</div>
<?php endif; ?>
<form method="POST" action="<?= $_SERVER['PHP_SELF']; ?>?cat=Sales&stock=<?= $stock; ?>">
<section class="valuations">
<h3>Valuations</h3>
<input type="hidden" name="stock" value="<?= $stock; ?>">
<div>
<a target="_blank" href="<?=$KBB_Link; ?>"><img src="images/logos/KBB.png"></a>
<p>
<label for="kbb_low">Fair Market Range</label>
<input type="number" class="dollars" id="kbb_low" name="kbb_low" placeholder="Low" value="<?= $KBB_Low; ?>"> -
<input type="number" class="dollars" id="kbb_high" name="kbb_high" placeholder="High" value="<?= $KBB_High; ?>">
</p>
<p>
<label for="kbb_fair">Fair Price</label>
<input type="number" class="dollars" id="kbb_fair" name="kbb_fair" placeholder="Fair" value="<?= $KBB_Fair; ?>">
</p>
<p>
<label for="kbb_retail">Sug. Retail</label>
<input type="number" class="dollars" id="kbb_retail" name="kbb_retail" placeholder="Retail" value="<?= $KBB_Retail; ?>">
</p>
<p class="clear">
<label for="kbb_url">Report URL</label>
<input type="url" id="kbb_url" name="kbb_url" size="20" spellcheck="false" placeholder="www.kbb.com/" value="<?= $KBB_URL; ?>">
<i title="Copy KBB URL" data-clipboard-target="#kbb_url" data-clipboard-action="copy" class="fa fa-clipboard" aria-hidden="true"></i>
</p>
</div>
<div>
<img src="images/logos/TrueCar.png">
<p><label for="truecar_great">Great Price</label> <input type="number" class="dollars" id="truecar_great" name="truecar_great" placeholder="Great" value="<?= $TrueCar_Great; ?>"></p>
<p><label for="truecar_average">Average Price</label> <input type="number" class="dollars" id="truecar_average" name="truecar_average" placeholder="Average" value="<?= $TrueCar_Average; ?>"></p>
<p><label for="truecar_above">High Price</label> <input type="number" class="dollars" id="truecar_above" name="truecar_above" placeholder="Above" value="<?= $TrueCar_Above; ?>"></p>
<p class="clear">
<label for="truecar_url">Report URL</label> <input type="url" id="truecar_url" name="truecar_url" size="20" spellcheck="false" placeholder="www.truecar.com/" value="<?= $TrueCar_URL; ?>">
<i title="Copy TrueCar URL" data-clipboard-target="#truecar_url" data-clipboard-action="copy" class="fa fa-clipboard" aria-hidden="true"></i>
</p>
</div>
<div>
<a target="_blank" href="http://www.nadaguides.com/Cars/<?= $year; ?>/<?= $make; ?>/<?= $model; ?>"><img src="images/logos/NADA.png"></a>
<p><label for="nada_trade">Trade</label> <input type="number" class="dollars" id="nada_trade" name="nada_trade" placeholder="Trade" value="<?= $NADA_Trade; ?>"></p>
<p><label for="nada_loan">Loan</label> <input type="number" class="dollars" id="nada_loan" name="nada_loan" placeholder="Loan" value="<?= $NADA_Loan; ?>"></p>
<p><label for="nada_retail">Retail</label> <input type="number" class="dollars" id="nada_retail" name="nada_retail" placeholder="Retail" value="<?= $NADA_Retail; ?>"></p>
</div>
<input type="submit" id="Submit" value="Submit">
</form>
<script src="include/js/clipboard.min.js"></script>
<script>
var clipboard = new Clipboard('.fa-clipboard');
clipboard.on('success', function(e) {console.log(e);});
clipboard.on('error', function(e) {console.log(e);});
</script>
答案 0 :(得分：1)
替换
if(isset($_POST['Submit']))
与
if (!empty($_POST))
一般情况下检查是否已发布任何内容（如果POST请求不为空 - >执行此操作）
答案 1 :(得分：0)
您可以尝试通过
检查它是否是POST请求if ($_SERVER['REQUEST_METHOD'] === 'POST') {
// …
}
也许这有帮助。
您应该使用filter_input来处理POST和GET参数。不推荐使用$ _POST或$ _GET。
答案 2 :(得分：0)
请验证您的提交是否有此...
<input type="submit" value="Submit" name="submit" />
，您的表单方法是
<form method="POST" action="xyz"> ...
答案 3 :(得分：0)
你的代码有点偏。 你正在检查
if(isset($_POST['Submit'])) {
根本没有发布。这就是为什么if部分永远不会被执行的原因。