<?php
session_start();
$title = "Cost Estimate";
include 'header.php';
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "Services";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if (isset($_POST['service'])) {
$selected_service = $_POST['service'];
if ($selected_service == "Tile & Grout Cleaning") {
$area = $_POST['area'];
$cost = 0;
// Fetch price from database
$sql = "SELECT price FROM Services WHERE service_name = 'Tile & Grout Cleaning'";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
$row = $result->fetch_assoc();
$price = $row["price"];
$cost = $price * $area;
echo "<h2>Cost Estimate for $selected_service</h2>";
echo "<p>Area: $area square feet</p>";
echo "<p>Estimated Cost: $$cost</p>";
} else {
echo "<p>No records found. Please select a service.</p>";
}
}
}
$conn->close();
include 'footer.php';
?>
<?php
session_start();
$title = "Estimate";
include 'header.php';
?>
<h2>Estimate</h2>
<center>
<h2>Service Estimate Form</h2>
<form action="estimate.php" method="post">
<label for="service">Select a service:</label>
<select class="service" name="service">
<option value="">--Select--</option>
<option value="Tile & Grout Cleaning">Tile & Grout Cleaning</option>
<option value="Wooden Floor Polishing">Wooden Floor Polishing</option>
</select>
<br><br>
<input type="submit" class="estimate">
</form>
<br /><br />
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$selected_service = $_POST['service'];
if ($selected_service == "Tile & Grout Cleaning") {
echo '<h2>Tile & Grout Cleaning</h2>';
echo '<form action="cost.php" method="post">';
echo '<label for="area">How large is the area to be cleaned (in square feet)?: </label>';
echo '<input type="number" name="area" required><br><br>';
echo '<input type="submit" value="Calculate Cost">';
echo '</form>';
} else {
echo '<p>Please select a service.</p>';
}
} ?>
<?php include 'footer.php'; ?>
当我提交估算总计所需的详细信息时,成本页面为空白。这让我难住了。我感觉我尝试了一切。甚至继续 chatgtp 希望找到解决方案,但它告诉我将操作估计,php 更改为成本,php,但我需要操作估计,php 来获取服务的规格。
应显示的输出是(为输出添加的随机值)
-瓷砖和灌浆清洁的成本估算
-面积:100平方英尺
-预计费用:90 美元
我知道我刚刚发布了所有内容,但我是新人,所以我不确定如何正确使用这些功能。
感谢帮助。
代码添加了一个隐藏的输入字段,以将所选服务从表单提交页面转移到另一个名为 cost.php 的页面。
echo '<input type="hidden" name="service" value="' . $selected_service . '">';
<?php
session_start();
$title = "Estimate";
include 'header.php';
?>
<h2>Estimate</h2>
<center>
<h2>Service Estimate Form</h2>
<form method="post" action="estimate.php">
<label for="service">Select a service:</label>
<select class="service" name="service">
<option value="">--Select--</option>
<option value="Tile & Grout Cleaning">Tile & Grout Cleaning</option>
<option value="Wooden Floor Polishing">Wooden Floor Polishing</option>
</select>
<br><br>
<input type="submit" name="serviceSubmitted" class="estimate">
</form>
<br />
<br />
<?php
if ($_POST['serviceSubmitted']) {
$selected_service = $_POST['service'];
if ($selected_service == "Tile & Grout Cleaning") {
echo '<h2>Tile & Grout Cleaning</h2>';
echo '<form action="cost.php" method="post">';
echo '<label for="area">How large is the area to be cleaned (in square feet)?: </label>';
echo '<input type="number" name="area" required><br><br>';
// Added hidden value to make sure service value is passed to cost.php in $_POST arguments
echo '<input type="hidden" name="service" value="' . $selected_service . '">';
echo '<input type="submit" value="Calculate Cost">';
echo '</form>';
} else {
echo '<p>Please select a service.</p>';
}
}
?>
<?php
include 'footer.php';
?>