選項未顯示我的數據庫中的結果
[英]Option is not showing results from my database
問題描述
我試圖從我的數據庫中顯示產品類別，但該選項只是空白，數據庫已連接，因為我根本沒有收到任何錯誤消息，所以我只是想知道是否有人可以給我一些幫助。 我試圖用數據庫文本更改我的變量，但仍然不起作用。
phpmyadmin 的圖片
<?php
// db.php
$con = mysqli_connect("localhost","Marcus","*****","electronicshub",);
if (!$con) {
die("Connection Error: " . mysqli_connect_error())
}
?>
<?php
include("includes/db.php")
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Insert Products</title>
<link rel="stylesheet" href="css/bootstrap-337.min.css">
<link rel="stylesheet" href="font-awsome\css\font-awesome.min.css">
</head>
<body>
<div class="row"><!-- row Begin -->
<div class="col-lg-12"><!-- col-lg-12 Begin -->
<ol class="breadcrumb"><!-- breadcrumb Begin -->
<li class="active"><!-- active Begin -->
<i class="fa fa-dashboard"></i> Dashboard / Insert Products
</li><!-- active Finished -->
</ol><!-- breadcrumb Finished -->
</div><!-- col-lg-12 Finished -->
</div><!-- row Finished -->
<div class="row"><!-- row Begin -->
<div class="col-lg-12"><!-- col-lg-12 Begin -->
<div class="panel panel-default"><!-- panel panel-default Begin -->
<div class="panel-heading"><!-- panel-heading Begin -->
<h3 class="panel-title"><!-- panel-title Begin -->
<i class="fa fa-money fa-fw"></i> Insert Product
</h3><!-- panel-title Finished -->
</div><!-- panel-heading Finished -->
<div class="panel-body"><!-- panel-body Begin -->
<form method="post" class="form-horizontal" enctype="multipart/form-data"><!-- form-horizontal Begin -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label">Product Title</label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_title" type="text" class="form-control" required>
</div><!-- col-md-6 Finished -->
</div><!-- form-group Finished -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label">Product Category</label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<select name="product_cat" class="form-control"><!-- form-control Begin -->
<option>Select a Category Product</option>
<?php
$get_p_cats ="SELECT * FROM product_categories";
$run_p_cats = mysqli_query($con,$get_p_cats);
while ($row_p_cats=mysqli_fetch_array($run_p_cats)) {
$p_cat_id = $row_p_cats['$p_cat_id'];
$p_cat_title = $row_p_cats['$p_cat_title'];
echo "
<option value='$p_cat_id'> $p_cat_title</option>
";
}
?>
</select><!-- form-control Finished -->
</div><!-- col-md-6 Finished -->
</div><!-- form-group Finished -->
</form><!-- form-horizontal Finished -->
</div><!-- panel-body Finished -->
</div><!-- panel panel-default Finished -->
</div><!-- col-lg-12 Finished -->
</div><!-- row Finished -->
<script src="js/jquery-331.min.js"></script>
<script src="js/bootstrap-337.min.js"></script>
</body>
</html>
2 個解決方案
解決方案1
2 已采納 2019-01-11 04:20:26
好吧，我發現了錯誤，您使用的是帶鍵名的美元
$p_cat_id = $row_p_cats['$p_cat_id'];
$p_cat_title = $row_p_cats['$p_cat_title'];
它應該像
$p_cat_id = $row_p_cats['p_cat_id'];
$p_cat_title = $row_p_cats['p_cat_title'];
解決方案2
-1 2020-10-06 10:51:38
在你的代碼中
$p_cat_id = $row_p_cats['$p_cat_id'];
$p_cat_title = $row_p_cats['$p_cat_title'];
您在行數組變量中使用了變量 $p_cat_id 而不是字符串 'p_cat_id'（請注意 $ 不是必需的）
所以修改后的代碼是
$p_cat_id=$row_p_cats['p_cat_id'];
$p_cat_title=$row_p_cats['p_cat_title'];
PHP select 來自數據庫的選項，結果未顯示
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