使用 php 中的输入字段将 table 行数据提交给另一个 table

Question

如何使用 PHP 和 MYSQL 中的输入字段将 table 行数据提交给另一个 table？

HTML

<form method="post" action="post.php">
  <input type="number" name="code" placeholder="Code..."/>
  <input type="submit" name="submit" value="Submit"/>
</form>

Post.php

if (isset($_POST['submit'])) {
    $code = $_POST['code'];


    $getCode = "SELECT * FROM products WHERE code=$code";
    mysqli_query($connection, $getCode);
    if ($_POST['code'] == $code) {
      $migrating = "INSERT INTO managment(price) VALUES ($price) SELECT 
      price FROM products";
      mysqli_query($connection, $migrating);
      header("location: index.php");
    }
}

我的代码有什么问题？

Answer 1

syntax 是：

INSERT INTO managment(price) SELECT price FROM products

也许你想添加一个 WHERE 子句 :

INSERT INTO managment(price) SELECT price FROM products WHERE code=$code

注意：在您的代码中，$_POST['code'] == $code 没有意义，因为之前 $code = $_POST['code']。

我还建议您查看 How can I prevent SQL injection in PHP? 以保护您的查询。

您的代码已更新（未经测试）：

if (isset($_POST['submit'])) {
    $code = $_POST['code'];

    $getCode = "SELECT * FROM products WHERE code=$code";
    $result = mysqli_query($connection, $getCode);
    if (!$result) die("Error: " . mysqli_error($connection));
    $row = mysqli_fetch_assoc($result);
    if ($row['code'] == $code) {
        $migrating = "INSERT INTO managment(price) 
                      SELECT price FROM products WHERE code=$code";
        $result2 = mysqli_query($connection, $migrating);
        if (!$result2) die("Error: " . mysqli_error($connection));
        header("Location: index.php");
        exit;
    }
}

使用 php 中的输入字段将 table 行数据提交给另一个 table

Submitting table row data to another table using an input field in php

php

mysql

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