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php - 如何在数据库中存储下拉列表中的值

转载 作者:行者123 更新时间:2023-11-30 01:28:52 31 4
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我创建了一个动态下拉列表,它正在从数据库填充数据。到目前为止它工作正常。现在我想将下拉列表中选定的数据添加到我的数据库中。我尝试了各种可能的方法,但无法在我的数据库中插入值,以下程序没有给出任何错误消息,但它也没有在我的数据库中插入数据。请检查一下。

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>
</body>
</html>

<?php

session_start();
if(isset($_SESSION['username']))
{


include 'connect.php';

$select_query= 'Select * from category';
$select_query_run = mysql_query($select_query);

echo "
<form action='insert_product.php' method='POST' ></br>

Product Name: <input type='text' name='product_name' /></br>

Price : <input type= 'text' name= 'price' /></br>

Description : <input type='text' name='description' />*Seperate by Comma</br>

";



// Drop Down Display




echo "<select name='category'>";


while ($select_query_array= mysql_fetch_array($select_query_run) )
{

echo "<option value='".$select_query_array['category_id']."' >".
htmlspecialchars($select_query_array["name"])."</option>";


}

$selectTag= "<input type='submit' value='Insert' /></select></form>";

echo $selectTag;
//Drop Down End!




if(isset($_POST['product_name']) && isset($_POST['price']) && isset($_POST['description']) )
{
echo $product_name = $_POST['product_name'];
echo $price = $_POST['price'];
echo $description = $_POST['description'];
echo $category = $_POST['category'];


//Problem Area

$query= "insert into products (name, price, description, category_id )
VALUES( '$product_name', $price, '$description', $category )";


if($query_run= mysql_query($query))
{

echo 'Data Inserted';



}
else
{
'Error In SQL'.mysql_error();
}
}

else
{
echo 'empty Field';
}

}

else
{
echo 'You Must Log in To View this Page!';
}
?>

最佳答案

更改:

$select_query=          'Select * from category';
$select_query_run = mysql_query($select_query);
echo "
<form action='insert_product.php' method='POST' ></br>

Product Name: <input type='text' name='product_name' /></br>

Price : <input type= 'text' name= 'price' /></br>

Description : <input type='text' name='description' />*Seperate by Comma</br>

<input type='submit' value='Insert' />";
echo "<select name='category'>";
while ($select_query_array= mysql_fetch_array($select_query_run) )
{

echo "<option value='".$select_query_array['category_id']."' >".
htmlspecialchars($select_query_array["name"])."</option>";


}

echo "</select></form>";

查询:

$query= "insert into products (name, price, description, category_id, name) VALUES('$product_name', $price, '$description', '".$_POST['category']."' )";

关于php - 如何在数据库中存储下拉列表中的值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17694376/

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